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7ef5a232 | 1 | /* Ethernet-VPN Packet and vty Processing File |
896014f4 | 2 | * Copyright (C) 2016 6WIND |
128ea8ab | 3 | * Copyright (C) 2017 Cumulus Networks, Inc. |
896014f4 | 4 | * |
128ea8ab | 5 | * This file is part of FRR. |
896014f4 DL |
6 | * |
7 | * FRRouting is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * FRRouting is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along | |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
7ef5a232 | 21 | |
7ef5a232 PG |
22 | #include <zebra.h> |
23 | ||
24 | #include "command.h" | |
25 | #include "filter.h" | |
26 | #include "prefix.h" | |
27 | #include "log.h" | |
28 | #include "memory.h" | |
29 | #include "stream.h" | |
14c1a7bf | 30 | #include "hash.h" |
31 | #include "jhash.h" | |
128ea8ab | 32 | #include "zclient.h" |
7ef5a232 PG |
33 | |
34 | #include "bgpd/bgp_attr_evpn.h" | |
35 | #include "bgpd/bgpd.h" | |
36 | #include "bgpd/bgp_table.h" | |
37 | #include "bgpd/bgp_route.h" | |
38 | #include "bgpd/bgp_attr.h" | |
39 | #include "bgpd/bgp_mplsvpn.h" | |
9bedbb1e | 40 | #include "bgpd/bgp_label.h" |
7ef5a232 | 41 | #include "bgpd/bgp_evpn.h" |
14c1a7bf | 42 | #include "bgpd/bgp_evpn_private.h" |
43 | #include "bgpd/bgp_ecommunity.h" | |
128ea8ab | 44 | #include "bgpd/bgp_encap_types.h" |
45 | #include "bgpd/bgp_debug.h" | |
46 | #include "bgpd/bgp_aspath.h" | |
d7d97010 | 47 | #include "bgpd/bgp_zebra.h" |
db0e1937 | 48 | #include "bgpd/bgp_nexthop.h" |
128ea8ab | 49 | |
50 | /* | |
51 | * Definitions and external declarations. | |
52 | */ | |
53 | extern struct zclient *zclient; | |
54 | ||
55 | DEFINE_QOBJ_TYPE(bgpevpn) | |
50f74cf1 | 56 | DEFINE_QOBJ_TYPE(evpnes) |
128ea8ab | 57 | |
58 | ||
59 | /* | |
60 | * Static function declarations | |
61 | */ | |
50f74cf1 | 62 | static void delete_evpn_route_entry(struct bgp *bgp, |
63 | afi_t afi, safi_t safi, | |
64 | struct bgp_node *rn, | |
d62a17ae | 65 | struct bgp_info **ri); |
66 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn); | |
14c1a7bf | 67 | |
68 | /* | |
69 | * Private functions. | |
70 | */ | |
71 | ||
50f74cf1 | 72 | /* compare two IPV4 VTEP IPs */ |
73 | static int evpn_vtep_ip_cmp(const void *p1, const void *p2) | |
74 | { | |
75 | const struct in_addr *ip1 = p1; | |
76 | const struct in_addr *ip2 = p2; | |
77 | ||
78 | if (!ip1 && !ip2) | |
79 | return 1; | |
80 | if (!ip1 || !ip2) | |
81 | return 0; | |
82 | return (ip1->s_addr == ip2->s_addr); | |
83 | } | |
84 | ||
85 | /* | |
86 | * Make hash key for ESI. | |
87 | */ | |
88 | static unsigned int esi_hash_keymake(void *p) | |
89 | { | |
90 | struct evpnes *pes = p; | |
91 | const void *pnt = (void *)pes->esi.val; | |
92 | ||
93 | return jhash(pnt, ESI_BYTES, 0xa5a5a55a); | |
94 | } | |
95 | ||
96 | /* | |
97 | * Compare two ESIs. | |
98 | */ | |
99 | static int esi_cmp(const void *p1, const void *p2) | |
100 | { | |
101 | const struct evpnes *pes1 = p1; | |
102 | const struct evpnes *pes2 = p2; | |
103 | ||
104 | if (pes1 == NULL && pes2 == NULL) | |
105 | return 1; | |
106 | ||
107 | if (pes1 == NULL || pes2 == NULL) | |
108 | return 0; | |
109 | ||
110 | return (memcmp(pes1->esi.val, pes2->esi.val, ESI_BYTES) == 0); | |
111 | } | |
112 | ||
14c1a7bf | 113 | /* |
114 | * Make vni hash key. | |
115 | */ | |
d62a17ae | 116 | static unsigned int vni_hash_key_make(void *p) |
14c1a7bf | 117 | { |
d62a17ae | 118 | struct bgpevpn *vpn = p; |
119 | return (jhash_1word(vpn->vni, 0)); | |
14c1a7bf | 120 | } |
121 | ||
122 | /* | |
123 | * Comparison function for vni hash | |
124 | */ | |
d62a17ae | 125 | static int vni_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 126 | { |
d62a17ae | 127 | const struct bgpevpn *vpn1 = p1; |
128 | const struct bgpevpn *vpn2 = p2; | |
14c1a7bf | 129 | |
d62a17ae | 130 | if (!vpn1 && !vpn2) |
131 | return 1; | |
132 | if (!vpn1 || !vpn2) | |
133 | return 0; | |
134 | return (vpn1->vni == vpn2->vni); | |
14c1a7bf | 135 | } |
136 | ||
10ebe1ab MK |
137 | /* |
138 | * Make vrf import route target hash key. | |
139 | */ | |
140 | static unsigned int vrf_import_rt_hash_key_make(void *p) | |
141 | { | |
142 | struct vrf_irt_node *irt = p; | |
143 | char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
144 | |
145 | return jhash(pnt, 8, 0x5abc1234); | |
10ebe1ab MK |
146 | } |
147 | ||
148 | /* | |
149 | * Comparison function for vrf import rt hash | |
150 | */ | |
151 | static int vrf_import_rt_hash_cmp(const void *p1, const void *p2) | |
152 | { | |
153 | const struct vrf_irt_node *irt1 = p1; | |
154 | const struct vrf_irt_node *irt2 = p2; | |
155 | ||
156 | if (irt1 == NULL && irt2 == NULL) | |
157 | return 1; | |
158 | ||
159 | if (irt1 == NULL || irt2 == NULL) | |
160 | return 0; | |
161 | ||
162 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); | |
163 | } | |
164 | ||
165 | /* | |
166 | * Create a new vrf import_rt in default instance | |
167 | */ | |
168 | static struct vrf_irt_node *vrf_import_rt_new(struct ecommunity_val *rt) | |
169 | { | |
170 | struct bgp *bgp_def = NULL; | |
171 | struct vrf_irt_node *irt; | |
172 | ||
173 | bgp_def = bgp_get_default(); | |
174 | if (!bgp_def) { | |
175 | zlog_err("vrf import rt new - def instance not created yet"); | |
176 | return NULL; | |
177 | } | |
178 | ||
179 | irt = XCALLOC(MTYPE_BGP_EVPN_VRF_IMPORT_RT, | |
180 | sizeof(struct vrf_irt_node)); | |
181 | if (!irt) | |
182 | return NULL; | |
183 | ||
184 | irt->rt = *rt; | |
185 | irt->vrfs = list_new(); | |
186 | ||
187 | /* Add to hash */ | |
188 | if (!hash_get(bgp_def->vrf_import_rt_hash, irt, hash_alloc_intern)) { | |
189 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); | |
190 | return NULL; | |
191 | } | |
192 | ||
193 | return irt; | |
194 | } | |
195 | ||
196 | /* | |
197 | * Free the vrf import rt node | |
198 | */ | |
199 | static void vrf_import_rt_free(struct vrf_irt_node *irt) | |
200 | { | |
201 | struct bgp *bgp_def = NULL; | |
202 | ||
203 | bgp_def = bgp_get_default(); | |
204 | if (!bgp_def) { | |
205 | zlog_err("vrf import rt free - def instance not created yet"); | |
206 | return; | |
207 | } | |
208 | ||
209 | hash_release(bgp_def->vrf_import_rt_hash, irt); | |
5d9cbca2 | 210 | list_delete_and_null(&irt->vrfs); |
10ebe1ab MK |
211 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); |
212 | } | |
213 | ||
214 | /* | |
215 | * Function to lookup Import RT node - used to map a RT to set of | |
216 | * VNIs importing routes with that RT. | |
217 | */ | |
218 | static struct vrf_irt_node *lookup_vrf_import_rt(struct ecommunity_val *rt) | |
219 | { | |
220 | struct bgp *bgp_def = NULL; | |
221 | struct vrf_irt_node *irt; | |
222 | struct vrf_irt_node tmp; | |
223 | ||
224 | bgp_def = bgp_get_default(); | |
225 | if (!bgp_def) { | |
226 | zlog_err("vrf import rt lookup - def instance not created yet"); | |
227 | return NULL; | |
228 | } | |
229 | ||
230 | memset(&tmp, 0, sizeof(struct vrf_irt_node)); | |
231 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
232 | irt = hash_lookup(bgp_def->vrf_import_rt_hash, &tmp); | |
233 | return irt; | |
234 | } | |
235 | ||
236 | /* | |
237 | * Is specified VRF present on the RT's list of "importing" VRFs? | |
238 | */ | |
996c9314 | 239 | static int is_vrf_present_in_irt_vrfs(struct list *vrfs, struct bgp *bgp_vrf) |
10ebe1ab MK |
240 | { |
241 | struct listnode *node = NULL, *nnode = NULL; | |
242 | struct bgp *tmp_bgp_vrf = NULL; | |
243 | ||
244 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, tmp_bgp_vrf)) { | |
245 | if (tmp_bgp_vrf == bgp_vrf) | |
246 | return 1; | |
247 | } | |
248 | return 0; | |
249 | } | |
250 | ||
14c1a7bf | 251 | /* |
252 | * Make import route target hash key. | |
253 | */ | |
d62a17ae | 254 | static unsigned int import_rt_hash_key_make(void *p) |
14c1a7bf | 255 | { |
d62a17ae | 256 | struct irt_node *irt = p; |
257 | char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
258 | |
259 | return jhash(pnt, 8, 0xdeadbeef); | |
14c1a7bf | 260 | } |
261 | ||
262 | /* | |
263 | * Comparison function for import rt hash | |
264 | */ | |
d62a17ae | 265 | static int import_rt_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 266 | { |
d62a17ae | 267 | const struct irt_node *irt1 = p1; |
268 | const struct irt_node *irt2 = p2; | |
14c1a7bf | 269 | |
d62a17ae | 270 | if (irt1 == NULL && irt2 == NULL) |
271 | return 1; | |
14c1a7bf | 272 | |
d62a17ae | 273 | if (irt1 == NULL || irt2 == NULL) |
274 | return 0; | |
14c1a7bf | 275 | |
d62a17ae | 276 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); |
14c1a7bf | 277 | } |
278 | ||
7724c0a1 | 279 | /* |
128ea8ab | 280 | * Create a new import_rt |
281 | */ | |
d62a17ae | 282 | static struct irt_node *import_rt_new(struct bgp *bgp, |
283 | struct ecommunity_val *rt) | |
128ea8ab | 284 | { |
d62a17ae | 285 | struct irt_node *irt; |
128ea8ab | 286 | |
d62a17ae | 287 | if (!bgp) |
288 | return NULL; | |
128ea8ab | 289 | |
d62a17ae | 290 | irt = XCALLOC(MTYPE_BGP_EVPN_IMPORT_RT, sizeof(struct irt_node)); |
291 | if (!irt) | |
292 | return NULL; | |
128ea8ab | 293 | |
d62a17ae | 294 | irt->rt = *rt; |
295 | irt->vnis = list_new(); | |
128ea8ab | 296 | |
d62a17ae | 297 | /* Add to hash */ |
298 | if (!hash_get(bgp->import_rt_hash, irt, hash_alloc_intern)) { | |
299 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); | |
300 | return NULL; | |
301 | } | |
128ea8ab | 302 | |
d62a17ae | 303 | return irt; |
128ea8ab | 304 | } |
305 | ||
306 | /* | |
307 | * Free the import rt node | |
7724c0a1 | 308 | */ |
d62a17ae | 309 | static void import_rt_free(struct bgp *bgp, struct irt_node *irt) |
7724c0a1 | 310 | { |
d62a17ae | 311 | hash_release(bgp->import_rt_hash, irt); |
b1ab0dfe | 312 | list_delete_and_null(&irt->vnis); |
d62a17ae | 313 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); |
7724c0a1 | 314 | } |
315 | ||
14c1a7bf | 316 | /* |
128ea8ab | 317 | * Function to lookup Import RT node - used to map a RT to set of |
318 | * VNIs importing routes with that RT. | |
319 | */ | |
d62a17ae | 320 | static struct irt_node *lookup_import_rt(struct bgp *bgp, |
321 | struct ecommunity_val *rt) | |
128ea8ab | 322 | { |
d62a17ae | 323 | struct irt_node *irt; |
324 | struct irt_node tmp; | |
128ea8ab | 325 | |
d62a17ae | 326 | memset(&tmp, 0, sizeof(struct irt_node)); |
327 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
328 | irt = hash_lookup(bgp->import_rt_hash, &tmp); | |
329 | return irt; | |
128ea8ab | 330 | } |
331 | ||
332 | /* | |
333 | * Is specified VNI present on the RT's list of "importing" VNIs? | |
334 | */ | |
d62a17ae | 335 | static int is_vni_present_in_irt_vnis(struct list *vnis, struct bgpevpn *vpn) |
128ea8ab | 336 | { |
d62a17ae | 337 | struct listnode *node, *nnode; |
338 | struct bgpevpn *tmp_vpn; | |
128ea8ab | 339 | |
d62a17ae | 340 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, tmp_vpn)) { |
341 | if (tmp_vpn == vpn) | |
342 | return 1; | |
343 | } | |
128ea8ab | 344 | |
d62a17ae | 345 | return 0; |
128ea8ab | 346 | } |
347 | ||
348 | /* | |
349 | * Compare Route Targets. | |
350 | */ | |
d62a17ae | 351 | static int evpn_route_target_cmp(struct ecommunity *ecom1, |
352 | struct ecommunity *ecom2) | |
128ea8ab | 353 | { |
d62a17ae | 354 | if (ecom1 && !ecom2) |
355 | return -1; | |
128ea8ab | 356 | |
d62a17ae | 357 | if (!ecom1 && ecom2) |
358 | return 1; | |
128ea8ab | 359 | |
d62a17ae | 360 | if (!ecom1 && !ecom2) |
361 | return 0; | |
128ea8ab | 362 | |
d62a17ae | 363 | if (ecom1->str && !ecom2->str) |
364 | return -1; | |
128ea8ab | 365 | |
d62a17ae | 366 | if (!ecom1->str && ecom2->str) |
367 | return 1; | |
128ea8ab | 368 | |
d62a17ae | 369 | if (!ecom1->str && !ecom2->str) |
370 | return 0; | |
128ea8ab | 371 | |
d62a17ae | 372 | return strcmp(ecom1->str, ecom2->str); |
128ea8ab | 373 | } |
374 | ||
987d8198 DS |
375 | static void evpn_xxport_delete_ecomm(void *val) |
376 | { | |
377 | struct ecommunity *ecomm = val; | |
378 | ecommunity_free(&ecomm); | |
379 | } | |
380 | ||
128ea8ab | 381 | /* |
382 | * Mask off global-admin field of specified extended community (RT), | |
383 | * just retain the local-admin field. | |
384 | */ | |
d62a17ae | 385 | static inline void mask_ecom_global_admin(struct ecommunity_val *dst, |
386 | struct ecommunity_val *src) | |
128ea8ab | 387 | { |
d7c0a89a | 388 | uint8_t type; |
128ea8ab | 389 | |
d62a17ae | 390 | type = src->val[0]; |
391 | dst->val[0] = 0; | |
392 | if (type == ECOMMUNITY_ENCODE_AS) { | |
393 | dst->val[2] = dst->val[3] = 0; | |
394 | } else if (type == ECOMMUNITY_ENCODE_AS4 | |
395 | || type == ECOMMUNITY_ENCODE_IP) { | |
396 | dst->val[2] = dst->val[3] = 0; | |
397 | dst->val[4] = dst->val[5] = 0; | |
398 | } | |
128ea8ab | 399 | } |
400 | ||
10ebe1ab MK |
401 | /* |
402 | * Map one RT to specified VRF. | |
403 | * bgp_vrf = BGP vrf instance | |
404 | */ | |
996c9314 | 405 | static void map_vrf_to_rt(struct bgp *bgp_vrf, struct ecommunity_val *eval) |
10ebe1ab MK |
406 | { |
407 | struct vrf_irt_node *irt = NULL; | |
408 | struct ecommunity_val eval_tmp; | |
409 | ||
410 | /* If using "automatic" RT, | |
411 | * we only care about the local-admin sub-field. | |
412 | * This is to facilitate using L3VNI(VRF-VNI) | |
413 | * as the RT for EBGP peering too. | |
414 | */ | |
415 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
996c9314 | 416 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
10ebe1ab MK |
417 | mask_ecom_global_admin(&eval_tmp, eval); |
418 | ||
419 | irt = lookup_vrf_import_rt(&eval_tmp); | |
e066d6d0 DS |
420 | if (irt && is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
421 | /* Already mapped. */ | |
422 | return; | |
10ebe1ab | 423 | |
e066d6d0 | 424 | if (!irt) |
10ebe1ab | 425 | irt = vrf_import_rt_new(&eval_tmp); |
10ebe1ab MK |
426 | |
427 | /* Add VRF to the list for this RT. */ | |
428 | listnode_add(irt->vrfs, bgp_vrf); | |
429 | } | |
430 | ||
431 | /* | |
432 | * Unmap specified VRF from specified RT. If there are no other | |
433 | * VRFs for this RT, then the RT hash is deleted. | |
434 | * bgp_vrf: BGP VRF specific instance | |
435 | */ | |
996c9314 | 436 | static void unmap_vrf_from_rt(struct bgp *bgp_vrf, struct vrf_irt_node *irt) |
10ebe1ab MK |
437 | { |
438 | /* Delete VRF from list for this RT. */ | |
439 | listnode_delete(irt->vrfs, bgp_vrf); | |
440 | if (!listnode_head(irt->vrfs)) { | |
10ebe1ab MK |
441 | vrf_import_rt_free(irt); |
442 | } | |
443 | } | |
444 | ||
128ea8ab | 445 | /* |
446 | * Map one RT to specified VNI. | |
14c1a7bf | 447 | */ |
d62a17ae | 448 | static void map_vni_to_rt(struct bgp *bgp, struct bgpevpn *vpn, |
449 | struct ecommunity_val *eval) | |
128ea8ab | 450 | { |
d62a17ae | 451 | struct irt_node *irt; |
452 | struct ecommunity_val eval_tmp; | |
128ea8ab | 453 | |
d62a17ae | 454 | /* If using "automatic" RT, we only care about the local-admin |
455 | * sub-field. | |
456 | * This is to facilitate using VNI as the RT for EBGP peering too. | |
457 | */ | |
458 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
459 | if (!is_import_rt_configured(vpn)) | |
460 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 461 | |
d62a17ae | 462 | irt = lookup_import_rt(bgp, &eval_tmp); |
b1ab0dfe | 463 | if (irt) |
d62a17ae | 464 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
465 | /* Already mapped. */ | |
466 | return; | |
128ea8ab | 467 | |
d62a17ae | 468 | if (!irt) { |
469 | irt = import_rt_new(bgp, &eval_tmp); | |
470 | assert(irt); | |
471 | } | |
128ea8ab | 472 | |
d62a17ae | 473 | /* Add VNI to the hash list for this RT. */ |
474 | listnode_add(irt->vnis, vpn); | |
128ea8ab | 475 | } |
476 | ||
477 | /* | |
478 | * Unmap specified VNI from specified RT. If there are no other | |
479 | * VNIs for this RT, then the RT hash is deleted. | |
480 | */ | |
d62a17ae | 481 | static void unmap_vni_from_rt(struct bgp *bgp, struct bgpevpn *vpn, |
482 | struct irt_node *irt) | |
14c1a7bf | 483 | { |
d62a17ae | 484 | /* Delete VNI from hash list for this RT. */ |
485 | listnode_delete(irt->vnis, vpn); | |
486 | if (!listnode_head(irt->vnis)) { | |
d62a17ae | 487 | import_rt_free(bgp, irt); |
488 | } | |
14c1a7bf | 489 | } |
490 | ||
128ea8ab | 491 | /* |
492 | * Create RT extended community automatically from passed information: | |
493 | * of the form AS:VNI. | |
494 | * NOTE: We use only the lower 16 bits of the AS. This is sufficient as | |
495 | * the need is to get a RT value that will be unique across different | |
496 | * VNIs but the same across routers (in the same AS) for a particular | |
497 | * VNI. | |
498 | */ | |
c581d8b0 | 499 | static void form_auto_rt(struct bgp *bgp, vni_t vni, struct list *rtl) |
128ea8ab | 500 | { |
d62a17ae | 501 | struct ecommunity_val eval; |
502 | struct ecommunity *ecomadd; | |
128ea8ab | 503 | |
bf1061d8 VB |
504 | if (bgp->advertise_autort_rfc8365) |
505 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 | 506 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
128ea8ab | 507 | |
d62a17ae | 508 | ecomadd = ecommunity_new(); |
509 | ecommunity_add_val(ecomadd, &eval); | |
510 | listnode_add_sort(rtl, ecomadd); | |
128ea8ab | 511 | } |
14c1a7bf | 512 | |
513 | /* | |
128ea8ab | 514 | * Derive RD and RT for a VNI automatically. Invoked at the time of |
515 | * creation of a VNI. | |
516 | */ | |
d62a17ae | 517 | static void derive_rd_rt_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 518 | { |
d62a17ae | 519 | bgp_evpn_derive_auto_rd(bgp, vpn); |
520 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
521 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
128ea8ab | 522 | } |
523 | ||
1ec31309 | 524 | /* |
525 | * Convert nexthop (remote VTEP IP) into an IPv6 address. | |
526 | */ | |
527 | static void evpn_convert_nexthop_to_ipv6(struct attr *attr) | |
528 | { | |
529 | if (BGP_ATTR_NEXTHOP_AFI_IP6(attr)) | |
530 | return; | |
531 | ipv4_to_ipv4_mapped_ipv6(&attr->mp_nexthop_global, attr->nexthop); | |
532 | attr->mp_nexthop_len = IPV6_MAX_BYTELEN; | |
533 | } | |
534 | ||
128ea8ab | 535 | /* |
536 | * Add (update) or delete MACIP from zebra. | |
14c1a7bf | 537 | */ |
d62a17ae | 538 | static int bgp_zebra_send_remote_macip(struct bgp *bgp, struct bgpevpn *vpn, |
539 | struct prefix_evpn *p, | |
540 | struct in_addr remote_vtep_ip, int add, | |
d7c0a89a | 541 | uint8_t flags) |
d62a17ae | 542 | { |
543 | struct stream *s; | |
544 | int ipa_len; | |
545 | char buf1[ETHER_ADDR_STRLEN]; | |
546 | char buf2[INET6_ADDRSTRLEN]; | |
547 | char buf3[INET6_ADDRSTRLEN]; | |
548 | ||
549 | /* Check socket. */ | |
550 | if (!zclient || zclient->sock < 0) | |
551 | return 0; | |
552 | ||
553 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
554 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) | |
555 | return 0; | |
556 | ||
557 | s = zclient->obuf; | |
558 | stream_reset(s); | |
559 | ||
996c9314 LB |
560 | zclient_create_header( |
561 | s, add ? ZEBRA_REMOTE_MACIP_ADD : ZEBRA_REMOTE_MACIP_DEL, | |
562 | bgp->vrf_id); | |
d62a17ae | 563 | stream_putl(s, vpn->vni); |
3714a385 | 564 | stream_put(s, &p->prefix.macip_addr.mac.octet, ETH_ALEN); /* Mac Addr */ |
d62a17ae | 565 | /* IP address length and IP address, if any. */ |
3714a385 | 566 | if (is_evpn_prefix_ipaddr_none(p)) |
d62a17ae | 567 | stream_putl(s, 0); |
568 | else { | |
3714a385 | 569 | ipa_len = is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BYTELEN |
d62a17ae | 570 | : IPV6_MAX_BYTELEN; |
571 | stream_putl(s, ipa_len); | |
3714a385 | 572 | stream_put(s, &p->prefix.macip_addr.ip.ip.addr, ipa_len); |
d62a17ae | 573 | } |
574 | stream_put_in_addr(s, &remote_vtep_ip); | |
575 | ||
ead40654 | 576 | /* TX flags - MAC sticky status and/or gateway mac */ |
d62a17ae | 577 | if (add) |
ead40654 | 578 | stream_putc(s, flags); |
d62a17ae | 579 | |
580 | stream_putw_at(s, 0, stream_get_endp(s)); | |
581 | ||
582 | if (bgp_debug_zebra(NULL)) | |
996c9314 LB |
583 | zlog_debug( |
584 | "Tx %s MACIP, VNI %u MAC %s IP %s (flags: 0x%x) remote VTEP %s", | |
585 | add ? "ADD" : "DEL", vpn->vni, | |
3714a385 | 586 | prefix_mac2str(&p->prefix.macip_addr.mac, |
587 | buf1, sizeof(buf1)), | |
588 | ipaddr2str(&p->prefix.macip_addr.ip, | |
589 | buf3, sizeof(buf3)), flags, | |
996c9314 LB |
590 | inet_ntop(AF_INET, &remote_vtep_ip, buf2, |
591 | sizeof(buf2))); | |
d62a17ae | 592 | |
593 | return zclient_send_message(zclient); | |
7ef5a232 | 594 | } |
b18825eb | 595 | |
128ea8ab | 596 | /* |
597 | * Add (update) or delete remote VTEP from zebra. | |
598 | */ | |
d62a17ae | 599 | static int bgp_zebra_send_remote_vtep(struct bgp *bgp, struct bgpevpn *vpn, |
600 | struct prefix_evpn *p, int add) | |
128ea8ab | 601 | { |
d62a17ae | 602 | struct stream *s; |
128ea8ab | 603 | |
d62a17ae | 604 | /* Check socket. */ |
605 | if (!zclient || zclient->sock < 0) | |
606 | return 0; | |
128ea8ab | 607 | |
d62a17ae | 608 | /* Don't try to register if Zebra doesn't know of this instance. */ |
609 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) | |
610 | return 0; | |
128ea8ab | 611 | |
d62a17ae | 612 | s = zclient->obuf; |
613 | stream_reset(s); | |
128ea8ab | 614 | |
996c9314 LB |
615 | zclient_create_header( |
616 | s, add ? ZEBRA_REMOTE_VTEP_ADD : ZEBRA_REMOTE_VTEP_DEL, | |
617 | bgp->vrf_id); | |
d62a17ae | 618 | stream_putl(s, vpn->vni); |
3714a385 | 619 | if (is_evpn_prefix_ipaddr_v4(p)) |
620 | stream_put_in_addr(s, &p->prefix.imet_addr.ip.ipaddr_v4); | |
621 | else if (is_evpn_prefix_ipaddr_v6(p)) { | |
d62a17ae | 622 | zlog_err( |
623 | "Bad remote IP when trying to %s remote VTEP for VNI %u", | |
624 | add ? "ADD" : "DEL", vpn->vni); | |
625 | return -1; | |
626 | } | |
128ea8ab | 627 | |
d62a17ae | 628 | stream_putw_at(s, 0, stream_get_endp(s)); |
128ea8ab | 629 | |
d62a17ae | 630 | if (bgp_debug_zebra(NULL)) |
631 | zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %s", | |
632 | add ? "ADD" : "DEL", vpn->vni, | |
3714a385 | 633 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
128ea8ab | 634 | |
d62a17ae | 635 | return zclient_send_message(zclient); |
128ea8ab | 636 | } |
637 | ||
50f74cf1 | 638 | /* |
639 | * Build extended community for EVPN ES (type-4) route | |
640 | */ | |
641 | static void build_evpn_type4_route_extcomm(struct evpnes *es, | |
642 | struct attr *attr) | |
643 | { | |
644 | struct ecommunity ecom_encap; | |
645 | struct ecommunity ecom_es_rt; | |
646 | struct ecommunity_val eval; | |
647 | struct ecommunity_val eval_es_rt; | |
648 | bgp_encap_types tnl_type; | |
649 | struct ethaddr mac; | |
650 | ||
651 | /* Encap */ | |
652 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
653 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
654 | encode_encap_extcomm(tnl_type, &eval); | |
655 | ecom_encap.size = 1; | |
656 | ecom_encap.val = (uint8_t *)eval.val; | |
657 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
658 | ||
659 | /* ES import RT */ | |
660 | memset(&mac, 0, sizeof(struct ethaddr)); | |
661 | memset(&ecom_es_rt, 0, sizeof(ecom_es_rt)); | |
662 | es_get_system_mac(&es->esi, &mac); | |
663 | encode_es_rt_extcomm(&eval_es_rt, &mac); | |
664 | ecom_es_rt.size = 1; | |
665 | ecom_es_rt.val = (uint8_t *)eval_es_rt.val; | |
666 | attr->ecommunity = | |
667 | ecommunity_merge(attr->ecommunity, &ecom_es_rt); | |
668 | ||
669 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
670 | } | |
671 | ||
342dd0c6 | 672 | /* |
673 | * Build extended communities for EVPN prefix route. | |
674 | */ | |
675 | static void build_evpn_type5_route_extcomm(struct bgp *bgp_vrf, | |
676 | struct attr *attr) | |
677 | { | |
678 | struct ecommunity ecom_encap; | |
679 | struct ecommunity ecom_rmac; | |
680 | struct ecommunity_val eval; | |
681 | struct ecommunity_val eval_rmac; | |
682 | bgp_encap_types tnl_type; | |
683 | struct listnode *node, *nnode; | |
684 | struct ecommunity *ecom; | |
685 | struct list *vrf_export_rtl = NULL; | |
686 | ||
687 | /* Encap */ | |
688 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
689 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
690 | encode_encap_extcomm(tnl_type, &eval); | |
691 | ecom_encap.size = 1; | |
d7c0a89a | 692 | ecom_encap.val = (uint8_t *)eval.val; |
342dd0c6 | 693 | |
694 | /* Add Encap */ | |
695 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
696 | ||
697 | /* Add the export RTs for L3VNI/VRF */ | |
698 | vrf_export_rtl = bgp_vrf->vrf_export_rtl; | |
1525e99f DS |
699 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, ecom)) |
700 | attr->ecommunity = | |
701 | ecommunity_merge(attr->ecommunity, ecom); | |
342dd0c6 | 702 | |
703 | /* add the router mac extended community */ | |
704 | if (!is_zero_mac(&attr->rmac)) { | |
705 | memset(&ecom_rmac, 0, sizeof(ecom_rmac)); | |
706 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); | |
707 | ecom_rmac.size = 1; | |
708 | ecom_rmac.val = (uint8_t *)eval_rmac.val; | |
996c9314 LB |
709 | attr->ecommunity = |
710 | ecommunity_merge(attr->ecommunity, &ecom_rmac); | |
342dd0c6 | 711 | } |
712 | ||
713 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
714 | } | |
715 | ||
128ea8ab | 716 | /* |
1ec31309 | 717 | * Build extended communities for EVPN route. |
718 | * This function is applicable for type-2 and type-3 routes. The layer-2 RT | |
719 | * and ENCAP extended communities are applicable for all routes. | |
720 | * The default gateway extended community and MAC mobility (sticky) extended | |
721 | * community are added as needed based on passed settings - only for type-2 | |
722 | * routes. Likewise, the layer-3 RT and Router MAC extended communities are | |
723 | * added, if present, based on passed settings - only for non-link-local | |
724 | * type-2 routes. | |
128ea8ab | 725 | */ |
7ec156a9 | 726 | static void build_evpn_route_extcomm(struct bgpevpn *vpn, struct attr *attr, |
1ec31309 | 727 | int add_l3_ecomm) |
128ea8ab | 728 | { |
d62a17ae | 729 | struct ecommunity ecom_encap; |
730 | struct ecommunity ecom_sticky; | |
ead40654 | 731 | struct ecommunity ecom_default_gw; |
bc59a672 | 732 | struct ecommunity ecom_rmac; |
68e33151 | 733 | struct ecommunity ecom_na; |
d62a17ae | 734 | struct ecommunity_val eval; |
735 | struct ecommunity_val eval_sticky; | |
ead40654 | 736 | struct ecommunity_val eval_default_gw; |
bc59a672 | 737 | struct ecommunity_val eval_rmac; |
68e33151 CS |
738 | struct ecommunity_val eval_na; |
739 | ||
d62a17ae | 740 | bgp_encap_types tnl_type; |
741 | struct listnode *node, *nnode; | |
742 | struct ecommunity *ecom; | |
d7c0a89a | 743 | uint32_t seqnum; |
7a3e76f1 | 744 | struct list *vrf_export_rtl = NULL; |
128ea8ab | 745 | |
d62a17ae | 746 | /* Encap */ |
747 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
748 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
749 | encode_encap_extcomm(tnl_type, &eval); | |
750 | ecom_encap.size = 1; | |
d7c0a89a | 751 | ecom_encap.val = (uint8_t *)eval.val; |
128ea8ab | 752 | |
d62a17ae | 753 | /* Add Encap */ |
754 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
128ea8ab | 755 | |
7a3e76f1 | 756 | /* Add the export RTs for L2VNI */ |
d62a17ae | 757 | for (ALL_LIST_ELEMENTS(vpn->export_rtl, node, nnode, ecom)) |
758 | attr->ecommunity = ecommunity_merge(attr->ecommunity, ecom); | |
128ea8ab | 759 | |
1ec31309 | 760 | /* Add the export RTs for L3VNI if told to - caller determines |
761 | * when this should be done. | |
523cafc4 | 762 | */ |
1ec31309 | 763 | if (add_l3_ecomm) { |
7ec156a9 MK |
764 | vrf_export_rtl = bgpevpn_get_vrf_export_rtl(vpn); |
765 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
766 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, | |
767 | ecom)) | |
996c9314 LB |
768 | attr->ecommunity = ecommunity_merge( |
769 | attr->ecommunity, ecom); | |
7ec156a9 | 770 | } |
f1f8b53c | 771 | } |
7a3e76f1 | 772 | |
1ec31309 | 773 | /* Add MAC mobility (sticky) if needed. */ |
d62a17ae | 774 | if (attr->sticky) { |
775 | seqnum = 0; | |
776 | memset(&ecom_sticky, 0, sizeof(ecom_sticky)); | |
777 | encode_mac_mobility_extcomm(1, seqnum, &eval_sticky); | |
778 | ecom_sticky.size = 1; | |
d7c0a89a | 779 | ecom_sticky.val = (uint8_t *)eval_sticky.val; |
d62a17ae | 780 | attr->ecommunity = |
781 | ecommunity_merge(attr->ecommunity, &ecom_sticky); | |
782 | } | |
c85c03c7 | 783 | |
1ec31309 | 784 | /* Add RMAC, if told to. */ |
785 | if (add_l3_ecomm) { | |
bc59a672 MK |
786 | memset(&ecom_rmac, 0, sizeof(ecom_rmac)); |
787 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); | |
788 | ecom_rmac.size = 1; | |
789 | ecom_rmac.val = (uint8_t *)eval_rmac.val; | |
996c9314 LB |
790 | attr->ecommunity = |
791 | ecommunity_merge(attr->ecommunity, &ecom_rmac); | |
bc59a672 MK |
792 | } |
793 | ||
1ec31309 | 794 | /* Add default gateway, if needed. */ |
ead40654 MK |
795 | if (attr->default_gw) { |
796 | memset(&ecom_default_gw, 0, sizeof(ecom_default_gw)); | |
797 | encode_default_gw_extcomm(&eval_default_gw); | |
798 | ecom_default_gw.size = 1; | |
799 | ecom_default_gw.val = (uint8_t *)eval_default_gw.val; | |
996c9314 LB |
800 | attr->ecommunity = |
801 | ecommunity_merge(attr->ecommunity, &ecom_default_gw); | |
ead40654 MK |
802 | } |
803 | ||
68e33151 CS |
804 | if (attr->router_flag) { |
805 | memset(&ecom_na, 0, sizeof(ecom_na)); | |
806 | encode_na_flag_extcomm(&eval_na, attr->router_flag); | |
807 | ecom_na.size = 1; | |
808 | ecom_na.val = (uint8_t *)eval_na.val; | |
809 | attr->ecommunity = ecommunity_merge(attr->ecommunity, | |
810 | &ecom_na); | |
811 | } | |
812 | ||
d62a17ae | 813 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); |
128ea8ab | 814 | } |
815 | ||
816 | /* | |
817 | * Add MAC mobility extended community to attribute. | |
818 | */ | |
d7c0a89a | 819 | static void add_mac_mobility_to_attr(uint32_t seq_num, struct attr *attr) |
d62a17ae | 820 | { |
821 | struct ecommunity ecom_tmp; | |
822 | struct ecommunity_val eval; | |
d7c0a89a | 823 | uint8_t *ecom_val_ptr; |
d62a17ae | 824 | int i; |
d7c0a89a | 825 | uint8_t *pnt; |
d62a17ae | 826 | int type = 0; |
827 | int sub_type = 0; | |
828 | ||
829 | /* Build MM */ | |
830 | encode_mac_mobility_extcomm(0, seq_num, &eval); | |
831 | ||
832 | /* Find current MM ecommunity */ | |
421bb26a | 833 | ecom_val_ptr = NULL; |
d62a17ae | 834 | |
835 | if (attr->ecommunity) { | |
836 | for (i = 0; i < attr->ecommunity->size; i++) { | |
837 | pnt = attr->ecommunity->val + (i * 8); | |
838 | type = *pnt++; | |
839 | sub_type = *pnt++; | |
840 | ||
841 | if (type == ECOMMUNITY_ENCODE_EVPN | |
842 | && sub_type | |
843 | == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY) { | |
d7c0a89a QY |
844 | ecom_val_ptr = (uint8_t *)(attr->ecommunity->val |
845 | + (i * 8)); | |
d62a17ae | 846 | break; |
847 | } | |
848 | } | |
849 | } | |
850 | ||
851 | /* Update the existing MM ecommunity */ | |
421bb26a MK |
852 | if (ecom_val_ptr) { |
853 | memcpy(ecom_val_ptr, eval.val, sizeof(char) * ECOMMUNITY_SIZE); | |
d62a17ae | 854 | } |
855 | /* Add MM to existing */ | |
856 | else { | |
857 | memset(&ecom_tmp, 0, sizeof(ecom_tmp)); | |
858 | ecom_tmp.size = 1; | |
d7c0a89a | 859 | ecom_tmp.val = (uint8_t *)eval.val; |
d62a17ae | 860 | |
f9a78910 DS |
861 | if (attr->ecommunity) |
862 | attr->ecommunity = | |
863 | ecommunity_merge(attr->ecommunity, &ecom_tmp); | |
864 | else | |
865 | attr->ecommunity = ecommunity_dup(&ecom_tmp); | |
d62a17ae | 866 | } |
128ea8ab | 867 | } |
868 | ||
869 | /* Install EVPN route into zebra. */ | |
d62a17ae | 870 | static int evpn_zebra_install(struct bgp *bgp, struct bgpevpn *vpn, |
871 | struct prefix_evpn *p, | |
d7c0a89a | 872 | struct in_addr remote_vtep_ip, uint8_t flags) |
128ea8ab | 873 | { |
d62a17ae | 874 | int ret; |
128ea8ab | 875 | |
d62a17ae | 876 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
877 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
ead40654 | 878 | 1, flags); |
d62a17ae | 879 | else |
880 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, 1); | |
128ea8ab | 881 | |
d62a17ae | 882 | return ret; |
128ea8ab | 883 | } |
884 | ||
885 | /* Uninstall EVPN route from zebra. */ | |
d62a17ae | 886 | static int evpn_zebra_uninstall(struct bgp *bgp, struct bgpevpn *vpn, |
887 | struct prefix_evpn *p, | |
888 | struct in_addr remote_vtep_ip) | |
128ea8ab | 889 | { |
d62a17ae | 890 | int ret; |
128ea8ab | 891 | |
d62a17ae | 892 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
893 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
894 | 0, 0); | |
895 | else | |
896 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, 0); | |
128ea8ab | 897 | |
d62a17ae | 898 | return ret; |
128ea8ab | 899 | } |
900 | ||
901 | /* | |
902 | * Due to MAC mobility, the prior "local" best route has been supplanted | |
903 | * by a "remote" best route. The prior route has to be deleted and withdrawn | |
904 | * from peers. | |
905 | */ | |
d62a17ae | 906 | static void evpn_delete_old_local_route(struct bgp *bgp, struct bgpevpn *vpn, |
907 | struct bgp_node *rn, | |
908 | struct bgp_info *old_local) | |
128ea8ab | 909 | { |
d62a17ae | 910 | struct bgp_node *global_rn; |
911 | struct bgp_info *ri; | |
912 | afi_t afi = AFI_L2VPN; | |
913 | safi_t safi = SAFI_EVPN; | |
128ea8ab | 914 | |
d62a17ae | 915 | /* Locate route node in the global EVPN routing table. Note that |
916 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
917 | * L3VPN routes. | |
918 | */ | |
919 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
920 | (struct prefix *)&rn->p, &vpn->prd); | |
921 | if (global_rn) { | |
922 | /* Delete route entry in the global EVPN table. */ | |
50f74cf1 | 923 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &ri); |
128ea8ab | 924 | |
d62a17ae | 925 | /* Schedule for processing - withdraws to peers happen from |
926 | * this table. | |
927 | */ | |
928 | if (ri) | |
929 | bgp_process(bgp, global_rn, afi, safi); | |
930 | bgp_unlock_node(global_rn); | |
931 | } | |
128ea8ab | 932 | |
d62a17ae | 933 | /* Delete route entry in the VNI route table, caller to remove. */ |
934 | bgp_info_delete(rn, old_local); | |
128ea8ab | 935 | } |
936 | ||
50f74cf1 | 937 | static struct in_addr *es_vtep_new(struct in_addr vtep) |
938 | { | |
939 | struct in_addr *ip; | |
940 | ||
941 | ip = XCALLOC(MTYPE_BGP_EVPN_ES_VTEP, sizeof(struct in_addr)); | |
942 | if (!ip) | |
943 | return NULL; | |
944 | ||
945 | ip->s_addr = vtep.s_addr; | |
946 | return ip; | |
947 | } | |
948 | ||
949 | static void es_vtep_free(struct in_addr *ip) | |
950 | { | |
951 | XFREE(MTYPE_BGP_EVPN_ES_VTEP, ip); | |
952 | } | |
953 | ||
954 | /* check if VTEP is already part of the list */ | |
955 | static int is_vtep_present_in_list(struct list *list, | |
956 | struct in_addr vtep) | |
957 | { | |
958 | struct listnode *node = NULL; | |
959 | struct in_addr *tmp; | |
960 | ||
961 | for (ALL_LIST_ELEMENTS_RO(list, node, tmp)) { | |
962 | if (tmp->s_addr == vtep.s_addr) | |
963 | return 1; | |
964 | } | |
965 | return 0; | |
966 | } | |
967 | ||
2bb9eff4 DS |
968 | /* |
969 | * Best path for ES route was changed, | |
970 | * update the list of VTEPs for this ES | |
971 | */ | |
50f74cf1 | 972 | static int evpn_es_install_vtep(struct bgp *bgp, |
973 | struct evpnes *es, | |
974 | struct prefix_evpn *p, | |
975 | struct in_addr rvtep) | |
976 | { | |
977 | struct in_addr *vtep_ip; | |
978 | ||
979 | if (is_vtep_present_in_list(es->vtep_list, rvtep)) | |
980 | return 0; | |
981 | ||
982 | ||
983 | vtep_ip = es_vtep_new(rvtep); | |
984 | if (vtep_ip) | |
985 | listnode_add_sort(es->vtep_list, vtep_ip); | |
986 | return 0; | |
987 | } | |
988 | ||
2bb9eff4 DS |
989 | /* |
990 | * Best path for ES route was changed, | |
991 | * update the list of VTEPs for this ES | |
992 | */ | |
50f74cf1 | 993 | static int evpn_es_uninstall_vtep(struct bgp *bgp, |
994 | struct evpnes *es, | |
995 | struct prefix_evpn *p, | |
996 | struct in_addr rvtep) | |
997 | { | |
998 | struct listnode *node, *nnode, *node_to_del = NULL; | |
999 | struct in_addr *tmp; | |
1000 | ||
1001 | for (ALL_LIST_ELEMENTS(es->vtep_list, node, nnode, tmp)) { | |
1002 | if (tmp->s_addr == rvtep.s_addr) { | |
1003 | es_vtep_free(tmp); | |
1004 | node_to_del = node; | |
1005 | } | |
1006 | } | |
1007 | ||
1008 | if (node_to_del) | |
1009 | list_delete_node(es->vtep_list, node_to_del); | |
1010 | ||
1011 | return 0; | |
1012 | } | |
1013 | ||
1014 | /* | |
1015 | * Calculate the best path for a ES(type-4) route. | |
1016 | */ | |
1017 | static int evpn_es_route_select_install(struct bgp *bgp, | |
1018 | struct evpnes *es, | |
1019 | struct bgp_node *rn) | |
1020 | { | |
1021 | int ret = 0; | |
1022 | afi_t afi = AFI_L2VPN; | |
1023 | safi_t safi = SAFI_EVPN; | |
1024 | struct bgp_info *old_select; /* old best */ | |
1025 | struct bgp_info *new_select; /* new best */ | |
1026 | struct bgp_info_pair old_and_new; | |
1027 | ||
1028 | /* Compute the best path. */ | |
1029 | bgp_best_selection(bgp, rn, &bgp->maxpaths[afi][safi], | |
1030 | &old_and_new, afi, safi); | |
1031 | old_select = old_and_new.old; | |
1032 | new_select = old_and_new.new; | |
1033 | ||
2bb9eff4 DS |
1034 | /* |
1035 | * If the best path hasn't changed - see if something needs to be | |
50f74cf1 | 1036 | * updated |
1037 | */ | |
1038 | if (old_select && old_select == new_select | |
1039 | && old_select->type == ZEBRA_ROUTE_BGP | |
1040 | && old_select->sub_type == BGP_ROUTE_IMPORTED | |
1041 | && !CHECK_FLAG(rn->flags, BGP_NODE_USER_CLEAR) | |
1042 | && !CHECK_FLAG(old_select->flags, BGP_INFO_ATTR_CHANGED) | |
1043 | && !bgp->addpath_tx_used[afi][safi]) { | |
1044 | if (bgp_zebra_has_route_changed(rn, old_select)) { | |
1045 | ret = evpn_es_install_vtep(bgp, es, | |
1046 | (struct prefix_evpn *)&rn->p, | |
1047 | old_select->attr->nexthop); | |
1048 | } | |
1049 | UNSET_FLAG(old_select->flags, BGP_INFO_MULTIPATH_CHG); | |
1050 | bgp_zebra_clear_route_change_flags(rn); | |
1051 | return ret; | |
1052 | } | |
1053 | ||
1054 | /* If the user did a "clear" this flag will be set */ | |
1055 | UNSET_FLAG(rn->flags, BGP_NODE_USER_CLEAR); | |
1056 | ||
2bb9eff4 DS |
1057 | /* |
1058 | * bestpath has changed; update relevant fields and install or uninstall | |
50f74cf1 | 1059 | * into the zebra RIB. |
1060 | */ | |
1061 | if (old_select || new_select) | |
1062 | bgp_bump_version(rn); | |
1063 | ||
1064 | if (old_select) | |
1065 | bgp_info_unset_flag(rn, old_select, BGP_INFO_SELECTED); | |
1066 | if (new_select) { | |
1067 | bgp_info_set_flag(rn, new_select, BGP_INFO_SELECTED); | |
1068 | bgp_info_unset_flag(rn, new_select, BGP_INFO_ATTR_CHANGED); | |
1069 | UNSET_FLAG(new_select->flags, BGP_INFO_MULTIPATH_CHG); | |
1070 | } | |
1071 | ||
1072 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
1073 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { | |
1074 | ret = evpn_es_install_vtep(bgp, es, | |
1075 | (struct prefix_evpn *)&rn->p, | |
1076 | new_select->attr->nexthop); | |
1077 | } else { | |
1078 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
1079 | && old_select->sub_type == BGP_ROUTE_IMPORTED) | |
2bb9eff4 DS |
1080 | ret = evpn_es_uninstall_vtep( |
1081 | bgp, es, (struct prefix_evpn *)&rn->p, | |
1082 | old_select->attr->nexthop); | |
50f74cf1 | 1083 | } |
1084 | ||
1085 | /* Clear any route change flags. */ | |
1086 | bgp_zebra_clear_route_change_flags(rn); | |
1087 | ||
1088 | /* Reap old select bgp_info, if it has been removed */ | |
1089 | if (old_select && CHECK_FLAG(old_select->flags, BGP_INFO_REMOVED)) | |
1090 | bgp_info_reap(rn, old_select); | |
1091 | ||
1092 | return ret; | |
1093 | } | |
1094 | ||
128ea8ab | 1095 | /* |
1096 | * Calculate the best path for an EVPN route. Install/update best path in zebra, | |
1097 | * if appropriate. | |
1098 | */ | |
d62a17ae | 1099 | static int evpn_route_select_install(struct bgp *bgp, struct bgpevpn *vpn, |
1100 | struct bgp_node *rn) | |
1101 | { | |
1102 | struct bgp_info *old_select, *new_select; | |
1103 | struct bgp_info_pair old_and_new; | |
68e33151 | 1104 | struct prefix_evpn *evp; |
d62a17ae | 1105 | afi_t afi = AFI_L2VPN; |
1106 | safi_t safi = SAFI_EVPN; | |
1107 | int ret = 0; | |
d7c0a89a | 1108 | uint8_t flags = 0; |
d62a17ae | 1109 | |
1110 | /* Compute the best path. */ | |
1111 | bgp_best_selection(bgp, rn, &bgp->maxpaths[afi][safi], &old_and_new, | |
1112 | afi, safi); | |
1113 | old_select = old_and_new.old; | |
1114 | new_select = old_and_new.new; | |
1115 | ||
68e33151 | 1116 | evp = (struct prefix_evpn *)&rn->p; |
d62a17ae | 1117 | /* If the best path hasn't changed - see if there is still something to |
1118 | * update | |
1119 | * to zebra RIB. | |
1120 | */ | |
1121 | if (old_select && old_select == new_select | |
1122 | && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1123 | && old_select->sub_type == BGP_ROUTE_IMPORTED |
d62a17ae | 1124 | && !CHECK_FLAG(rn->flags, BGP_NODE_USER_CLEAR) |
1125 | && !CHECK_FLAG(old_select->flags, BGP_INFO_ATTR_CHANGED) | |
1126 | && !bgp->addpath_tx_used[afi][safi]) { | |
ead40654 MK |
1127 | if (bgp_zebra_has_route_changed(rn, old_select)) { |
1128 | if (old_select->attr->sticky) | |
1129 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
1130 | if (old_select->attr->default_gw) | |
1131 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
68e33151 CS |
1132 | if (is_evpn_prefix_ipaddr_v6(evp) && |
1133 | old_select->attr->router_flag) | |
1134 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
1135 | ||
996c9314 LB |
1136 | ret = evpn_zebra_install( |
1137 | bgp, vpn, (struct prefix_evpn *)&rn->p, | |
1138 | old_select->attr->nexthop, flags); | |
ead40654 | 1139 | } |
d62a17ae | 1140 | UNSET_FLAG(old_select->flags, BGP_INFO_MULTIPATH_CHG); |
1141 | bgp_zebra_clear_route_change_flags(rn); | |
1142 | return ret; | |
1143 | } | |
1144 | ||
1145 | /* If the user did a "clear" this flag will be set */ | |
1146 | UNSET_FLAG(rn->flags, BGP_NODE_USER_CLEAR); | |
1147 | ||
1148 | /* bestpath has changed; update relevant fields and install or uninstall | |
1149 | * into the zebra RIB. | |
1150 | */ | |
1151 | if (old_select || new_select) | |
1152 | bgp_bump_version(rn); | |
1153 | ||
1154 | if (old_select) | |
1155 | bgp_info_unset_flag(rn, old_select, BGP_INFO_SELECTED); | |
1156 | if (new_select) { | |
1157 | bgp_info_set_flag(rn, new_select, BGP_INFO_SELECTED); | |
1158 | bgp_info_unset_flag(rn, new_select, BGP_INFO_ATTR_CHANGED); | |
1159 | UNSET_FLAG(new_select->flags, BGP_INFO_MULTIPATH_CHG); | |
1160 | } | |
1161 | ||
1162 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1163 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { |
ead40654 MK |
1164 | flags = 0; |
1165 | if (new_select->attr->sticky) | |
1166 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
1167 | if (new_select->attr->default_gw) | |
1168 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
68e33151 CS |
1169 | if (is_evpn_prefix_ipaddr_v6(evp) && |
1170 | new_select->attr->router_flag) | |
1171 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
1172 | ||
d62a17ae | 1173 | ret = evpn_zebra_install(bgp, vpn, (struct prefix_evpn *)&rn->p, |
996c9314 | 1174 | new_select->attr->nexthop, flags); |
d62a17ae | 1175 | /* If an old best existed and it was a "local" route, the only |
1176 | * reason | |
1177 | * it would be supplanted is due to MAC mobility procedures. So, | |
1178 | * we | |
1179 | * need to do an implicit delete and withdraw that route from | |
1180 | * peers. | |
1181 | */ | |
1182 | if (old_select && old_select->peer == bgp->peer_self | |
1183 | && old_select->type == ZEBRA_ROUTE_BGP | |
1184 | && old_select->sub_type == BGP_ROUTE_STATIC) | |
1185 | evpn_delete_old_local_route(bgp, vpn, rn, old_select); | |
1186 | } else { | |
1187 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1188 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
d62a17ae | 1189 | ret = evpn_zebra_uninstall(bgp, vpn, |
1190 | (struct prefix_evpn *)&rn->p, | |
1191 | old_select->attr->nexthop); | |
1192 | } | |
1193 | ||
1194 | /* Clear any route change flags. */ | |
1195 | bgp_zebra_clear_route_change_flags(rn); | |
1196 | ||
1197 | /* Reap old select bgp_info, if it has been removed */ | |
1198 | if (old_select && CHECK_FLAG(old_select->flags, BGP_INFO_REMOVED)) | |
1199 | bgp_info_reap(rn, old_select); | |
1200 | ||
1201 | return ret; | |
128ea8ab | 1202 | } |
1203 | ||
ead40654 MK |
1204 | /* |
1205 | * Return true if the local ri for this rn is of type gateway mac | |
1206 | */ | |
1207 | static int evpn_route_is_def_gw(struct bgp *bgp, struct bgp_node *rn) | |
1208 | { | |
996c9314 LB |
1209 | struct bgp_info *tmp_ri = NULL; |
1210 | struct bgp_info *local_ri = NULL; | |
ead40654 MK |
1211 | |
1212 | local_ri = NULL; | |
1213 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
1214 | if (tmp_ri->peer == bgp->peer_self | |
1215 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
1216 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1217 | local_ri = tmp_ri; | |
1218 | } | |
1219 | ||
1220 | if (!local_ri) | |
1221 | return 0; | |
1222 | ||
1223 | return local_ri->attr->default_gw; | |
1224 | } | |
1225 | ||
c85c03c7 | 1226 | |
1227 | /* | |
1228 | * Return true if the local ri for this rn has sticky set | |
1229 | */ | |
d62a17ae | 1230 | static int evpn_route_is_sticky(struct bgp *bgp, struct bgp_node *rn) |
c85c03c7 | 1231 | { |
d62a17ae | 1232 | struct bgp_info *tmp_ri; |
1233 | struct bgp_info *local_ri; | |
c85c03c7 | 1234 | |
d62a17ae | 1235 | local_ri = NULL; |
1236 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
1237 | if (tmp_ri->peer == bgp->peer_self | |
1238 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
1239 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1240 | local_ri = tmp_ri; | |
1241 | } | |
c85c03c7 | 1242 | |
d62a17ae | 1243 | if (!local_ri) |
1244 | return 0; | |
c85c03c7 | 1245 | |
d62a17ae | 1246 | return local_ri->attr->sticky; |
c85c03c7 | 1247 | } |
1248 | ||
50f74cf1 | 1249 | /* |
1250 | * create or update EVPN type4 route entry. | |
1251 | * This could be in the ES table or the global table. | |
1252 | * TODO: handle remote ES (type4) routes as well | |
1253 | */ | |
1254 | static int update_evpn_type4_route_entry(struct bgp *bgp, | |
1255 | struct evpnes *es, | |
1256 | afi_t afi, safi_t safi, | |
1257 | struct bgp_node *rn, | |
1258 | struct attr *attr, | |
1259 | int add, | |
1260 | struct bgp_info **ri, | |
1261 | int *route_changed) | |
1262 | { | |
1263 | char buf[ESI_STR_LEN]; | |
1264 | char buf1[INET6_ADDRSTRLEN]; | |
1265 | struct bgp_info *tmp_ri = NULL; | |
1266 | struct bgp_info *local_ri = NULL; /* local route entry if any */ | |
1267 | struct bgp_info *remote_ri = NULL; /* remote route entry if any */ | |
1268 | struct attr *attr_new = NULL; | |
1269 | struct prefix_evpn *evp = NULL; | |
1270 | ||
1271 | *ri = NULL; | |
1272 | *route_changed = 1; | |
1273 | evp = (struct prefix_evpn *)&rn->p; | |
1274 | ||
1275 | /* locate the local and remote entries if any */ | |
1276 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
1277 | if (tmp_ri->peer == bgp->peer_self && | |
1278 | tmp_ri->type == ZEBRA_ROUTE_BGP && | |
1279 | tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1280 | local_ri = tmp_ri; | |
1281 | if (tmp_ri->type == ZEBRA_ROUTE_BGP && | |
1282 | tmp_ri->sub_type == BGP_ROUTE_IMPORTED && | |
1283 | CHECK_FLAG(tmp_ri->flags, BGP_INFO_VALID)) | |
1284 | remote_ri = tmp_ri; | |
1285 | } | |
1286 | ||
1287 | /* we don't expect to see a remote_ri at this point. | |
1288 | * An ES route has esi + vtep_ip as the key, | |
1289 | * We shouldn't see the same route from any other vtep. | |
1290 | */ | |
1291 | if (remote_ri) { | |
1292 | zlog_err( | |
1293 | "%u ERROR: local es route for ESI: %s Vtep %s also learnt from remote", | |
1294 | bgp->vrf_id, | |
1295 | esi_to_str(&evp->prefix.es_addr.esi, buf, sizeof(buf)), | |
1296 | ipaddr2str(&es->originator_ip, buf1, sizeof(buf1))); | |
1297 | return -1; | |
1298 | } | |
1299 | ||
1300 | if (!local_ri && !add) | |
1301 | return 0; | |
1302 | ||
1303 | /* create or update the entry */ | |
1304 | if (!local_ri) { | |
1305 | ||
1306 | /* Add or update attribute to hash */ | |
1307 | attr_new = bgp_attr_intern(attr); | |
1308 | ||
1309 | /* Create new route with its attribute. */ | |
1310 | tmp_ri = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, | |
1311 | 0, bgp->peer_self, attr_new, rn); | |
1312 | SET_FLAG(tmp_ri->flags, BGP_INFO_VALID); | |
1313 | ||
1314 | /* add the newly created path to the route-node */ | |
1315 | bgp_info_add(rn, tmp_ri); | |
1316 | } else { | |
1317 | tmp_ri = local_ri; | |
1318 | if (attrhash_cmp(tmp_ri->attr, attr) | |
1319 | && !CHECK_FLAG(tmp_ri->flags, BGP_INFO_REMOVED)) | |
1320 | *route_changed = 0; | |
1321 | else { | |
1322 | /* The attribute has changed. | |
1323 | * Add (or update) attribute to hash. */ | |
1324 | attr_new = bgp_attr_intern(attr); | |
1325 | bgp_info_set_flag(rn, tmp_ri, BGP_INFO_ATTR_CHANGED); | |
1326 | ||
1327 | /* Restore route, if needed. */ | |
1328 | if (CHECK_FLAG(tmp_ri->flags, BGP_INFO_REMOVED)) | |
1329 | bgp_info_restore(rn, tmp_ri); | |
1330 | ||
1331 | /* Unintern existing, set to new. */ | |
1332 | bgp_attr_unintern(&tmp_ri->attr); | |
1333 | tmp_ri->attr = attr_new; | |
1334 | tmp_ri->uptime = bgp_clock(); | |
1335 | } | |
1336 | } | |
1337 | ||
1338 | /* Return back the route entry. */ | |
1339 | *ri = tmp_ri; | |
1340 | return 0; | |
1341 | } | |
1342 | ||
1343 | /* update evpn es (type-4) route */ | |
1344 | static int update_evpn_type4_route(struct bgp *bgp, | |
1345 | struct evpnes *es, | |
1346 | struct prefix_evpn *p) | |
1347 | { | |
1348 | int ret = 0; | |
1349 | int route_changed = 0; | |
1350 | char buf[ESI_STR_LEN]; | |
1351 | char buf1[INET6_ADDRSTRLEN]; | |
1352 | afi_t afi = AFI_L2VPN; | |
1353 | safi_t safi = SAFI_EVPN; | |
1354 | struct attr attr; | |
1355 | struct attr *attr_new = NULL; | |
1356 | struct bgp_node *rn = NULL; | |
1357 | struct bgp_info *ri = NULL; | |
1358 | ||
1359 | memset(&attr, 0, sizeof(struct attr)); | |
1360 | ||
1361 | /* Build path-attribute for this route. */ | |
1362 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1363 | attr.nexthop = es->originator_ip.ipaddr_v4; | |
1364 | attr.mp_nexthop_global_in = es->originator_ip.ipaddr_v4; | |
1365 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1366 | ||
1367 | /* Set up extended community. */ | |
1368 | build_evpn_type4_route_extcomm(es, &attr); | |
1369 | ||
1370 | /* First, create (or fetch) route node within the ESI. */ | |
1371 | /* NOTE: There is no RD here. */ | |
1372 | rn = bgp_node_get(es->route_table, (struct prefix *)p); | |
1373 | ||
1374 | /* Create or update route entry. */ | |
1375 | ret = update_evpn_type4_route_entry(bgp, es, afi, safi, rn, | |
1376 | &attr, 1, &ri, | |
1377 | &route_changed); | |
1378 | if (ret != 0) { | |
1379 | zlog_err("%u ERROR: Failed to updated ES route ESI: %s VTEP %s", | |
1380 | bgp->vrf_id, | |
1381 | esi_to_str(&p->prefix.es_addr.esi, buf, sizeof(buf)), | |
1382 | ipaddr2str(&es->originator_ip, buf1, sizeof(buf1))); | |
1383 | } | |
1384 | ||
1385 | assert(ri); | |
1386 | attr_new = ri->attr; | |
1387 | ||
1388 | /* Perform route selection; | |
1389 | * this is just to set the flags correctly | |
1390 | * as local route in the ES always wins. | |
1391 | */ | |
1392 | evpn_es_route_select_install(bgp, es, rn); | |
1393 | bgp_unlock_node(rn); | |
1394 | ||
1395 | /* If this is a new route or some attribute has changed, export the | |
1396 | * route to the global table. The route will be advertised to peers | |
1397 | * from there. Note that this table is a 2-level tree (RD-level + | |
1398 | * Prefix-level) similar to L3VPN routes. | |
1399 | */ | |
1400 | if (route_changed) { | |
1401 | struct bgp_info *global_ri; | |
1402 | ||
1403 | rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
1404 | (struct prefix *)p, &es->prd); | |
1405 | update_evpn_type4_route_entry(bgp, es, afi, safi, | |
1406 | rn, attr_new, | |
1407 | 1, &global_ri, | |
1408 | &route_changed); | |
1409 | ||
1410 | /* Schedule for processing and unlock node. */ | |
1411 | bgp_process(bgp, rn, afi, safi); | |
1412 | bgp_unlock_node(rn); | |
1413 | } | |
1414 | ||
1415 | /* Unintern temporary. */ | |
1416 | aspath_unintern(&attr.aspath); | |
1417 | return 0; | |
1418 | } | |
1419 | ||
342dd0c6 | 1420 | static int update_evpn_type5_route_entry(struct bgp *bgp_def, |
1421 | struct bgp *bgp_vrf, afi_t afi, | |
1422 | safi_t safi, struct bgp_node *rn, | |
5424b7ba | 1423 | struct attr *attr, int *route_changed) |
342dd0c6 | 1424 | { |
1425 | struct attr *attr_new = NULL; | |
1426 | struct bgp_info *ri = NULL; | |
1427 | mpls_label_t label = MPLS_INVALID_LABEL; | |
1428 | struct bgp_info *local_ri = NULL; | |
1429 | struct bgp_info *tmp_ri = NULL; | |
1430 | ||
5424b7ba | 1431 | *route_changed = 0; |
342dd0c6 | 1432 | /* locate the local route entry if any */ |
1433 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
1434 | if (tmp_ri->peer == bgp_def->peer_self | |
1435 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
1436 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1437 | local_ri = tmp_ri; | |
1438 | } | |
1439 | ||
2bb9eff4 DS |
1440 | /* |
1441 | * create a new route entry if one doesnt exist. | |
1442 | * Otherwise see if route attr has changed | |
523cafc4 | 1443 | */ |
342dd0c6 | 1444 | if (!local_ri) { |
1445 | ||
5424b7ba MK |
1446 | /* route has changed as this is the first entry */ |
1447 | *route_changed = 1; | |
1448 | ||
342dd0c6 | 1449 | /* Add (or update) attribute to hash. */ |
1450 | attr_new = bgp_attr_intern(attr); | |
1451 | ||
1452 | /* create the route info from attribute */ | |
1453 | ri = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, | |
1454 | bgp_def->peer_self, attr_new, rn); | |
1455 | SET_FLAG(ri->flags, BGP_INFO_VALID); | |
1456 | ||
b57ba6d2 | 1457 | /* Type-5 routes advertise the L3-VNI */ |
342dd0c6 | 1458 | bgp_info_extra_get(ri); |
1459 | vni2label(bgp_vrf->l3vni, &label); | |
b57ba6d2 MK |
1460 | memcpy(&ri->extra->label, &label, sizeof(label)); |
1461 | ri->extra->num_labels = 1; | |
342dd0c6 | 1462 | |
1463 | /* add the route entry to route node*/ | |
1464 | bgp_info_add(rn, ri); | |
1465 | } else { | |
1466 | ||
1467 | tmp_ri = local_ri; | |
1468 | if (!attrhash_cmp(tmp_ri->attr, attr)) { | |
5424b7ba MK |
1469 | |
1470 | /* attribute changed */ | |
1471 | *route_changed = 1; | |
1472 | ||
342dd0c6 | 1473 | /* The attribute has changed. */ |
1474 | /* Add (or update) attribute to hash. */ | |
1475 | attr_new = bgp_attr_intern(attr); | |
1476 | bgp_info_set_flag(rn, tmp_ri, BGP_INFO_ATTR_CHANGED); | |
1477 | ||
1478 | /* Restore route, if needed. */ | |
1479 | if (CHECK_FLAG(tmp_ri->flags, BGP_INFO_REMOVED)) | |
1480 | bgp_info_restore(rn, tmp_ri); | |
1481 | ||
1482 | /* Unintern existing, set to new. */ | |
1483 | bgp_attr_unintern(&tmp_ri->attr); | |
1484 | tmp_ri->attr = attr_new; | |
1485 | tmp_ri->uptime = bgp_clock(); | |
1486 | } | |
1487 | } | |
1488 | return 0; | |
1489 | } | |
1490 | ||
1491 | /* update evpn type-5 route entry */ | |
996c9314 LB |
1492 | static int update_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp, |
1493 | struct attr *src_attr) | |
342dd0c6 | 1494 | { |
1495 | afi_t afi = AFI_L2VPN; | |
1496 | safi_t safi = SAFI_EVPN; | |
1497 | struct attr attr; | |
1498 | struct bgp_node *rn = NULL; | |
1499 | struct bgp *bgp_def = NULL; | |
5424b7ba | 1500 | int route_changed = 0; |
342dd0c6 | 1501 | |
1502 | bgp_def = bgp_get_default(); | |
1503 | if (!bgp_def) | |
faafdfa8 | 1504 | return 0; |
342dd0c6 | 1505 | |
2f69f6d3 | 1506 | /* Build path attribute for this route - use the source attr, if |
1507 | * present, else treat as locally originated. | |
1508 | */ | |
1509 | if (src_attr) | |
1510 | bgp_attr_dup(&attr, src_attr); | |
1511 | else { | |
1512 | memset(&attr, 0, sizeof(struct attr)); | |
1513 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1514 | } | |
1515 | /* Set nexthop to ourselves and fill in the Router MAC. */ | |
342dd0c6 | 1516 | attr.nexthop = bgp_vrf->originator_ip; |
1517 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
1518 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1519 | memcpy(&attr.rmac, &bgp_vrf->rmac, sizeof(struct ethaddr)); | |
1520 | ||
1521 | /* Setup RT and encap extended community */ | |
1522 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1523 | ||
1524 | /* get the route node in global table */ | |
1525 | rn = bgp_afi_node_get(bgp_def->rib[afi][safi], afi, safi, | |
996c9314 | 1526 | (struct prefix *)evp, &bgp_vrf->vrf_prd); |
342dd0c6 | 1527 | assert(rn); |
1528 | ||
1529 | /* create or update the route entry within the route node */ | |
996c9314 LB |
1530 | update_evpn_type5_route_entry(bgp_def, bgp_vrf, afi, safi, rn, &attr, |
1531 | &route_changed); | |
342dd0c6 | 1532 | |
1533 | /* schedule for processing and unlock node */ | |
5424b7ba MK |
1534 | if (route_changed) { |
1535 | bgp_process(bgp_def, rn, afi, safi); | |
1536 | bgp_unlock_node(rn); | |
1537 | } | |
342dd0c6 | 1538 | |
1539 | /* uninten temporary */ | |
5ee65f6f | 1540 | if (!src_attr) |
1541 | aspath_unintern(&attr.aspath); | |
342dd0c6 | 1542 | return 0; |
1543 | } | |
1544 | ||
128ea8ab | 1545 | /* |
1546 | * Create or update EVPN route entry. This could be in the VNI route table | |
1547 | * or the global route table. | |
1548 | */ | |
d62a17ae | 1549 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
1550 | afi_t afi, safi_t safi, struct bgp_node *rn, | |
1551 | struct attr *attr, int add, int vni_table, | |
d7c0a89a | 1552 | struct bgp_info **ri, uint8_t flags) |
d62a17ae | 1553 | { |
1554 | struct bgp_info *tmp_ri; | |
1555 | struct bgp_info *local_ri, *remote_ri; | |
1556 | struct attr *attr_new; | |
b57ba6d2 | 1557 | mpls_label_t label[BGP_MAX_LABELS]; |
d7c0a89a | 1558 | uint32_t num_labels = 1; |
d62a17ae | 1559 | int route_change = 1; |
d7c0a89a | 1560 | uint8_t sticky = 0; |
b57ba6d2 | 1561 | struct prefix_evpn *evp; |
d62a17ae | 1562 | |
1563 | *ri = NULL; | |
b57ba6d2 MK |
1564 | evp = (struct prefix_evpn *)&rn->p; |
1565 | memset(&label, 0, sizeof(label)); | |
d62a17ae | 1566 | |
1567 | /* See if this is an update of an existing route, or a new add. Also, | |
1568 | * identify if already known from remote, and if so, the one with the | |
1569 | * highest sequence number; this is only when adding to the VNI routing | |
1570 | * table. | |
1571 | */ | |
1572 | local_ri = remote_ri = NULL; | |
1573 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) { | |
1574 | if (tmp_ri->peer == bgp->peer_self | |
1575 | && tmp_ri->type == ZEBRA_ROUTE_BGP | |
1576 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1577 | local_ri = tmp_ri; | |
1578 | if (vni_table) { | |
1579 | if (tmp_ri->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1580 | && tmp_ri->sub_type == BGP_ROUTE_IMPORTED |
d62a17ae | 1581 | && CHECK_FLAG(tmp_ri->flags, BGP_INFO_VALID)) { |
1582 | if (!remote_ri) | |
1583 | remote_ri = tmp_ri; | |
1584 | else if (mac_mobility_seqnum(tmp_ri->attr) | |
1585 | > mac_mobility_seqnum(remote_ri->attr)) | |
1586 | remote_ri = tmp_ri; | |
1587 | } | |
1588 | } | |
1589 | } | |
1590 | ||
1591 | /* If route doesn't exist already, create a new one, if told to. | |
1592 | * Otherwise act based on whether the attributes of the route have | |
1593 | * changed or not. | |
1594 | */ | |
1595 | if (!local_ri && !add) | |
1596 | return 0; | |
1597 | ||
1598 | if (!local_ri) { | |
1599 | /* When learnt locally for the first time but already known from | |
1600 | * remote, we have to initiate appropriate MAC mobility steps. | |
50f74cf1 | 1601 | * This is applicable when updating the VNI routing table. |
1a98c087 MK |
1602 | * We need to skip mobility steps for g/w macs (local mac on g/w |
1603 | * SVI) advertised in EVPN. | |
1604 | * This will ensure that local routes are preferred for g/w macs | |
d62a17ae | 1605 | */ |
ead40654 | 1606 | if (remote_ri && !CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) { |
d7c0a89a | 1607 | uint32_t cur_seqnum; |
d62a17ae | 1608 | |
1609 | /* Add MM extended community to route. */ | |
1610 | cur_seqnum = mac_mobility_seqnum(remote_ri->attr); | |
1611 | add_mac_mobility_to_attr(cur_seqnum + 1, attr); | |
1612 | } | |
1613 | ||
1614 | /* Add (or update) attribute to hash. */ | |
1615 | attr_new = bgp_attr_intern(attr); | |
1616 | ||
1617 | /* Extract MAC mobility sequence number, if any. */ | |
1618 | attr_new->mm_seqnum = | |
1619 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1620 | attr_new->sticky = sticky; | |
1621 | ||
1622 | /* Create new route with its attribute. */ | |
1623 | tmp_ri = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, | |
1624 | bgp->peer_self, attr_new, rn); | |
1625 | SET_FLAG(tmp_ri->flags, BGP_INFO_VALID); | |
1626 | bgp_info_extra_get(tmp_ri); | |
1627 | ||
1628 | /* The VNI goes into the 'label' field of the route */ | |
b57ba6d2 | 1629 | vni2label(vpn->vni, &label[0]); |
c48d9f5f MK |
1630 | |
1631 | /* Type-2 routes may carry a second VNI - the L3-VNI. | |
1632 | * Only attach second label if we are advertising two labels for | |
1633 | * type-2 routes. | |
1634 | */ | |
996c9314 LB |
1635 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1636 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
b57ba6d2 MK |
1637 | vni_t l3vni; |
1638 | ||
1639 | l3vni = bgpevpn_get_l3vni(vpn); | |
1640 | if (l3vni) { | |
1641 | vni2label(l3vni, &label[1]); | |
1642 | num_labels++; | |
1643 | } | |
1644 | } | |
d62a17ae | 1645 | |
b57ba6d2 MK |
1646 | memcpy(&tmp_ri->extra->label, label, sizeof(label)); |
1647 | tmp_ri->extra->num_labels = num_labels; | |
d62a17ae | 1648 | bgp_info_add(rn, tmp_ri); |
1649 | } else { | |
1650 | tmp_ri = local_ri; | |
1651 | if (attrhash_cmp(tmp_ri->attr, attr) | |
1652 | && !CHECK_FLAG(tmp_ri->flags, BGP_INFO_REMOVED)) | |
1653 | route_change = 0; | |
1654 | else { | |
c48d9f5f MK |
1655 | /* |
1656 | * The attributes have changed, type-2 routes needs to | |
1657 | * be advertised with right labels. | |
1658 | */ | |
1659 | vni2label(vpn->vni, &label[0]); | |
996c9314 LB |
1660 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1661 | && CHECK_FLAG(vpn->flags, | |
1662 | VNI_FLAG_USE_TWO_LABELS)) { | |
c48d9f5f MK |
1663 | vni_t l3vni; |
1664 | ||
1665 | l3vni = bgpevpn_get_l3vni(vpn); | |
1666 | if (l3vni) { | |
1667 | vni2label(l3vni, &label[1]); | |
1668 | num_labels++; | |
1669 | } | |
1670 | } | |
1671 | memcpy(&tmp_ri->extra->label, label, sizeof(label)); | |
1672 | tmp_ri->extra->num_labels = num_labels; | |
1673 | ||
d62a17ae | 1674 | /* The attribute has changed. */ |
1675 | /* Add (or update) attribute to hash. */ | |
1676 | attr_new = bgp_attr_intern(attr); | |
1677 | bgp_info_set_flag(rn, tmp_ri, BGP_INFO_ATTR_CHANGED); | |
1678 | ||
1679 | /* Restore route, if needed. */ | |
1680 | if (CHECK_FLAG(tmp_ri->flags, BGP_INFO_REMOVED)) | |
1681 | bgp_info_restore(rn, tmp_ri); | |
1682 | ||
1683 | /* Unintern existing, set to new. */ | |
1684 | bgp_attr_unintern(&tmp_ri->attr); | |
1685 | tmp_ri->attr = attr_new; | |
1686 | tmp_ri->uptime = bgp_clock(); | |
1687 | } | |
1688 | } | |
1689 | ||
1690 | /* Return back the route entry. */ | |
1691 | *ri = tmp_ri; | |
1692 | return route_change; | |
128ea8ab | 1693 | } |
1694 | ||
1695 | /* | |
1696 | * Create or update EVPN route (of type based on prefix) for specified VNI | |
1697 | * and schedule for processing. | |
1698 | */ | |
d62a17ae | 1699 | static int update_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
d7c0a89a | 1700 | struct prefix_evpn *p, uint8_t flags) |
128ea8ab | 1701 | { |
d62a17ae | 1702 | struct bgp_node *rn; |
1703 | struct attr attr; | |
1704 | struct attr *attr_new; | |
1ec31309 | 1705 | int add_l3_ecomm = 0; |
d62a17ae | 1706 | struct bgp_info *ri; |
1707 | afi_t afi = AFI_L2VPN; | |
1708 | safi_t safi = SAFI_EVPN; | |
1709 | int route_change; | |
128ea8ab | 1710 | |
d62a17ae | 1711 | memset(&attr, 0, sizeof(struct attr)); |
128ea8ab | 1712 | |
d62a17ae | 1713 | /* Build path-attribute for this route. */ |
1714 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1715 | attr.nexthop = vpn->originator_ip; | |
1716 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1717 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
317f1fe0 | 1718 | attr.sticky = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) ? 1 : 0; |
ead40654 | 1719 | attr.default_gw = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW) ? 1 : 0; |
68e33151 CS |
1720 | attr.router_flag = CHECK_FLAG(flags, |
1721 | ZEBRA_MACIP_TYPE_ROUTER_FLAG) ? 1 : 0; | |
be41eb68 MK |
1722 | |
1723 | /* PMSI is only needed for type-3 routes */ | |
1724 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) | |
1725 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL); | |
1726 | ||
1ec31309 | 1727 | /* router mac is only needed for type-2 routes here. */ |
be41eb68 MK |
1728 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
1729 | bgpevpn_get_rmac(vpn, &attr.rmac); | |
a21bd7a3 | 1730 | vni2label(vpn->vni, &(attr.label)); |
128ea8ab | 1731 | |
1ec31309 | 1732 | /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're |
1733 | * IPv4 or IPv6 global addresses and we're advertising L3VNI with | |
1734 | * these routes. | |
1735 | */ | |
1736 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE && | |
3714a385 | 1737 | (is_evpn_prefix_ipaddr_v4(p) || |
1738 | !IN6_IS_ADDR_LINKLOCAL(&p->prefix.macip_addr.ip.ipaddr_v6)) && | |
1ec31309 | 1739 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) |
1740 | add_l3_ecomm = 1; | |
1741 | ||
1742 | /* Set up extended community. */ | |
1743 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
128ea8ab | 1744 | |
d62a17ae | 1745 | /* First, create (or fetch) route node within the VNI. */ |
1746 | /* NOTE: There is no RD here. */ | |
1747 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
128ea8ab | 1748 | |
d62a17ae | 1749 | /* Create or update route entry. */ |
1750 | route_change = update_evpn_route_entry(bgp, vpn, afi, safi, rn, &attr, | |
1a98c087 | 1751 | 1, 1, &ri, flags); |
d62a17ae | 1752 | assert(ri); |
1753 | attr_new = ri->attr; | |
128ea8ab | 1754 | |
d62a17ae | 1755 | /* Perform route selection; this is just to set the flags correctly |
1756 | * as local route in the VNI always wins. | |
1757 | */ | |
1758 | evpn_route_select_install(bgp, vpn, rn); | |
1759 | bgp_unlock_node(rn); | |
128ea8ab | 1760 | |
d62a17ae | 1761 | /* If this is a new route or some attribute has changed, export the |
1762 | * route to the global table. The route will be advertised to peers | |
1763 | * from there. Note that this table is a 2-level tree (RD-level + | |
1764 | * Prefix-level) similar to L3VPN routes. | |
1765 | */ | |
1766 | if (route_change) { | |
1767 | struct bgp_info *global_ri; | |
128ea8ab | 1768 | |
d62a17ae | 1769 | rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, |
1770 | (struct prefix *)p, &vpn->prd); | |
1771 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, attr_new, 1, 0, | |
1a98c087 | 1772 | &global_ri, flags); |
128ea8ab | 1773 | |
d62a17ae | 1774 | /* Schedule for processing and unlock node. */ |
1775 | bgp_process(bgp, rn, afi, safi); | |
1776 | bgp_unlock_node(rn); | |
1777 | } | |
128ea8ab | 1778 | |
d62a17ae | 1779 | /* Unintern temporary. */ |
1780 | aspath_unintern(&attr.aspath); | |
128ea8ab | 1781 | |
d62a17ae | 1782 | return 0; |
128ea8ab | 1783 | } |
1784 | ||
50f74cf1 | 1785 | /* |
1786 | * Delete EVPN route entry. | |
1787 | * The entry can be in ESI/VNI table or the global table. | |
1788 | */ | |
1789 | static void delete_evpn_route_entry(struct bgp *bgp, | |
1790 | afi_t afi, safi_t safi, | |
1791 | struct bgp_node *rn, | |
1792 | struct bgp_info **ri) | |
342dd0c6 | 1793 | { |
50f74cf1 | 1794 | struct bgp_info *tmp_ri; |
342dd0c6 | 1795 | |
1796 | *ri = NULL; | |
1797 | ||
50f74cf1 | 1798 | /* Now, find matching route. */ |
342dd0c6 | 1799 | for (tmp_ri = rn->info; tmp_ri; tmp_ri = tmp_ri->next) |
50f74cf1 | 1800 | if (tmp_ri->peer == bgp->peer_self |
342dd0c6 | 1801 | && tmp_ri->type == ZEBRA_ROUTE_BGP |
1802 | && tmp_ri->sub_type == BGP_ROUTE_STATIC) | |
1803 | break; | |
1804 | ||
1805 | *ri = tmp_ri; | |
1806 | ||
1807 | /* Mark route for delete. */ | |
1808 | if (tmp_ri) | |
1809 | bgp_info_delete(rn, tmp_ri); | |
1810 | } | |
1811 | ||
50f74cf1 | 1812 | |
1813 | ||
1814 | /* Delete EVPN ES (type-4) route */ | |
1815 | static int delete_evpn_type4_route(struct bgp *bgp, | |
1816 | struct evpnes *es, | |
1817 | struct prefix_evpn *p) | |
1818 | { | |
1819 | afi_t afi = AFI_L2VPN; | |
1820 | safi_t safi = SAFI_EVPN; | |
1821 | struct bgp_info *ri; | |
1822 | struct bgp_node *rn = NULL; /* rn in esi table */ | |
1823 | struct bgp_node *global_rn = NULL; /* rn in global table */ | |
1824 | ||
1825 | /* First, locate the route node within the ESI. | |
1826 | * If it doesn't exist, ther is nothing to do. | |
1827 | * Note: there is no RD here. | |
1828 | */ | |
1829 | rn = bgp_node_lookup(es->route_table, (struct prefix *)p); | |
2bb9eff4 | 1830 | if (!rn) |
50f74cf1 | 1831 | return 0; |
1832 | ||
1833 | /* Next, locate route node in the global EVPN routing table. | |
1834 | * Note that this table is a 2-level tree (RD-level + Prefix-level) | |
1835 | */ | |
1836 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
1837 | (struct prefix *)p, &es->prd); | |
1838 | if (global_rn) { | |
1839 | ||
1840 | /* Delete route entry in the global EVPN table. */ | |
1841 | delete_evpn_route_entry(bgp, afi, safi, | |
1842 | global_rn, &ri); | |
1843 | ||
1844 | /* Schedule for processing - withdraws to peers happen from | |
1845 | * this table. | |
1846 | */ | |
1847 | if (ri) | |
1848 | bgp_process(bgp, global_rn, afi, safi); | |
1849 | bgp_unlock_node(global_rn); | |
1850 | } | |
1851 | ||
1852 | /* | |
1853 | * Delete route entry in the ESI route table. | |
1854 | * This can just be removed. | |
1855 | */ | |
1856 | delete_evpn_route_entry(bgp, afi, safi, rn, &ri); | |
1857 | if (ri) | |
1858 | bgp_info_reap(rn, ri); | |
1859 | bgp_unlock_node(rn); | |
1860 | return 0; | |
1861 | } | |
1862 | ||
342dd0c6 | 1863 | /* Delete EVPN type5 route */ |
996c9314 | 1864 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp) |
342dd0c6 | 1865 | { |
1866 | afi_t afi = AFI_L2VPN; | |
1867 | safi_t safi = SAFI_EVPN; | |
1868 | struct bgp_node *rn = NULL; | |
1869 | struct bgp_info *ri = NULL; | |
1870 | struct bgp *bgp_def = NULL; /* default bgp instance */ | |
1871 | ||
1872 | bgp_def = bgp_get_default(); | |
1873 | if (!bgp_def) | |
faafdfa8 | 1874 | return 0; |
342dd0c6 | 1875 | |
1876 | /* locate the global route entry for this type-5 prefix */ | |
1877 | rn = bgp_afi_node_lookup(bgp_def->rib[afi][safi], afi, safi, | |
1878 | (struct prefix *)evp, &bgp_vrf->vrf_prd); | |
1879 | if (!rn) | |
1880 | return 0; | |
1881 | ||
50f74cf1 | 1882 | delete_evpn_route_entry(bgp_def, afi, safi, rn, &ri); |
342dd0c6 | 1883 | if (ri) |
1884 | bgp_process(bgp_def, rn, afi, safi); | |
1885 | bgp_unlock_node(rn); | |
1886 | return 0; | |
1887 | } | |
1888 | ||
128ea8ab | 1889 | /* |
1890 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
1891 | * schedule for processing. | |
1892 | */ | |
d62a17ae | 1893 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
1894 | struct prefix_evpn *p) | |
1895 | { | |
1896 | struct bgp_node *rn, *global_rn; | |
1897 | struct bgp_info *ri; | |
1898 | afi_t afi = AFI_L2VPN; | |
1899 | safi_t safi = SAFI_EVPN; | |
1900 | ||
1901 | /* First, locate the route node within the VNI. If it doesn't exist, | |
1902 | * there | |
1903 | * is nothing further to do. | |
1904 | */ | |
1905 | /* NOTE: There is no RD here. */ | |
1906 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
1907 | if (!rn) | |
1908 | return 0; | |
1909 | ||
1910 | /* Next, locate route node in the global EVPN routing table. Note that | |
1911 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1912 | * L3VPN routes. | |
1913 | */ | |
1914 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
1915 | (struct prefix *)p, &vpn->prd); | |
1916 | if (global_rn) { | |
1917 | /* Delete route entry in the global EVPN table. */ | |
50f74cf1 | 1918 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &ri); |
d62a17ae | 1919 | |
1920 | /* Schedule for processing - withdraws to peers happen from | |
1921 | * this table. | |
1922 | */ | |
1923 | if (ri) | |
1924 | bgp_process(bgp, global_rn, afi, safi); | |
1925 | bgp_unlock_node(global_rn); | |
1926 | } | |
1927 | ||
1928 | /* Delete route entry in the VNI route table. This can just be removed. | |
1929 | */ | |
50f74cf1 | 1930 | delete_evpn_route_entry(bgp, afi, safi, rn, &ri); |
d62a17ae | 1931 | if (ri) |
1932 | bgp_info_reap(rn, ri); | |
1933 | bgp_unlock_node(rn); | |
1934 | ||
1935 | return 0; | |
128ea8ab | 1936 | } |
1937 | ||
1938 | /* | |
1939 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
1940 | * be scheduled for advertise to peers. | |
1941 | */ | |
d62a17ae | 1942 | static int update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
1943 | { | |
1944 | afi_t afi; | |
1945 | safi_t safi; | |
1946 | struct bgp_node *rn; | |
1947 | struct bgp_info *ri; | |
1948 | struct attr attr; | |
1949 | struct attr attr_sticky; | |
ead40654 | 1950 | struct attr attr_def_gw; |
1ec31309 | 1951 | struct attr attr_ip6_ll; |
d62a17ae | 1952 | struct attr *attr_new; |
1ec31309 | 1953 | int add_l3_ecomm = 0; |
d62a17ae | 1954 | |
1955 | afi = AFI_L2VPN; | |
1956 | safi = SAFI_EVPN; | |
1957 | memset(&attr, 0, sizeof(struct attr)); | |
1958 | memset(&attr_sticky, 0, sizeof(struct attr)); | |
ead40654 | 1959 | memset(&attr_def_gw, 0, sizeof(struct attr)); |
1ec31309 | 1960 | memset(&attr_ip6_ll, 0, sizeof(struct attr)); |
d62a17ae | 1961 | |
1ec31309 | 1962 | /* Build path-attribute - multiple type-2 routes for this VNI will share |
1963 | * the same path attribute, but we need separate structures for sticky | |
1964 | * MACs, default gateway and IPv6 link-local addresses (no L3 RT/RMAC). | |
d62a17ae | 1965 | */ |
1966 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1967 | bgp_attr_default_set(&attr_sticky, BGP_ORIGIN_IGP); | |
ead40654 | 1968 | bgp_attr_default_set(&attr_def_gw, BGP_ORIGIN_IGP); |
d62a17ae | 1969 | attr.nexthop = vpn->originator_ip; |
1970 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1971 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
bc59a672 | 1972 | bgpevpn_get_rmac(vpn, &attr.rmac); |
d62a17ae | 1973 | attr_sticky.nexthop = vpn->originator_ip; |
1974 | attr_sticky.mp_nexthop_global_in = vpn->originator_ip; | |
1975 | attr_sticky.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1976 | attr_sticky.sticky = 1; | |
bc59a672 | 1977 | bgpevpn_get_rmac(vpn, &attr_sticky.rmac); |
ead40654 MK |
1978 | attr_def_gw.nexthop = vpn->originator_ip; |
1979 | attr_def_gw.mp_nexthop_global_in = vpn->originator_ip; | |
1980 | attr_def_gw.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1981 | attr_def_gw.default_gw = 1; | |
1982 | bgpevpn_get_rmac(vpn, &attr_def_gw.rmac); | |
1ec31309 | 1983 | bgp_attr_default_set(&attr_ip6_ll, BGP_ORIGIN_IGP); |
1984 | attr_ip6_ll.nexthop = vpn->originator_ip; | |
1985 | attr_ip6_ll.mp_nexthop_global_in = vpn->originator_ip; | |
1986 | attr_ip6_ll.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1987 | ||
1988 | /* Add L3 VNI RTs and RMAC for non IPv6 link-local attributes if | |
1989 | * using L3 VNI for type-2 routes also. | |
1990 | */ | |
1991 | if (CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) | |
1992 | add_l3_ecomm = 1; | |
1993 | ||
1994 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
1995 | build_evpn_route_extcomm(vpn, &attr_sticky, add_l3_ecomm); | |
1996 | build_evpn_route_extcomm(vpn, &attr_def_gw, add_l3_ecomm); | |
1997 | build_evpn_route_extcomm(vpn, &attr_ip6_ll, 0); | |
d62a17ae | 1998 | |
1999 | /* Walk this VNI's route table and update local type-2 routes. For any | |
2000 | * routes updated, update corresponding entry in the global table too. | |
2001 | */ | |
2002 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2003 | rn = bgp_route_next(rn)) { | |
2004 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2005 | struct bgp_node *rd_rn; | |
2006 | struct bgp_info *global_ri; | |
2007 | ||
2008 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2009 | continue; | |
2010 | ||
3714a385 | 2011 | if (is_evpn_prefix_ipaddr_v6(evp) && |
2012 | IN6_IS_ADDR_LINKLOCAL(&evp->prefix.macip_addr.ip.ipaddr_v6)) | |
1ec31309 | 2013 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, |
2014 | &attr_ip6_ll, 0, 1, &ri, 0); | |
2015 | else { | |
7ec156a9 MK |
2016 | if (evpn_route_is_sticky(bgp, rn)) |
2017 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, | |
996c9314 LB |
2018 | &attr_sticky, 0, 1, &ri, |
2019 | 0); | |
68e33151 CS |
2020 | else if (evpn_route_is_def_gw(bgp, rn)) { |
2021 | if (is_evpn_prefix_ipaddr_v6(evp)) | |
2022 | attr_def_gw.router_flag = 1; | |
ead40654 | 2023 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, |
996c9314 LB |
2024 | &attr_def_gw, 0, 1, &ri, |
2025 | 0); | |
68e33151 | 2026 | } else |
7ec156a9 MK |
2027 | update_evpn_route_entry(bgp, vpn, afi, safi, rn, |
2028 | &attr, 0, 1, &ri, 0); | |
7ec156a9 | 2029 | } |
d62a17ae | 2030 | |
2031 | /* If a local route exists for this prefix, we need to update | |
2032 | * the global routing table too. | |
2033 | */ | |
2034 | if (!ri) | |
2035 | continue; | |
2036 | ||
2037 | /* Perform route selection; this is just to set the flags | |
2038 | * correctly | |
2039 | * as local route in the VNI always wins. | |
2040 | */ | |
2041 | evpn_route_select_install(bgp, vpn, rn); | |
2042 | ||
2043 | attr_new = ri->attr; | |
2044 | ||
2045 | /* Update route in global routing table. */ | |
2046 | rd_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
2047 | (struct prefix *)evp, &vpn->prd); | |
2048 | assert(rd_rn); | |
2049 | update_evpn_route_entry(bgp, vpn, afi, safi, rd_rn, attr_new, 0, | |
1a98c087 | 2050 | 0, &global_ri, 0); |
d62a17ae | 2051 | |
2052 | /* Schedule for processing and unlock node. */ | |
2053 | bgp_process(bgp, rd_rn, afi, safi); | |
2054 | bgp_unlock_node(rd_rn); | |
2055 | } | |
2056 | ||
2057 | /* Unintern temporary. */ | |
2058 | aspath_unintern(&attr.aspath); | |
2059 | aspath_unintern(&attr_sticky.aspath); | |
ead40654 | 2060 | aspath_unintern(&attr_def_gw.aspath); |
1ec31309 | 2061 | aspath_unintern(&attr_ip6_ll.aspath); |
d62a17ae | 2062 | |
2063 | return 0; | |
128ea8ab | 2064 | } |
2065 | ||
2066 | /* | |
2067 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
2068 | * global routing table. These are also scheduled for withdraw from peers. | |
2069 | */ | |
d62a17ae | 2070 | static int delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2071 | { |
d62a17ae | 2072 | afi_t afi; |
2073 | safi_t safi; | |
2074 | struct bgp_node *rdrn, *rn; | |
2075 | struct bgp_table *table; | |
2076 | struct bgp_info *ri; | |
128ea8ab | 2077 | |
d62a17ae | 2078 | afi = AFI_L2VPN; |
2079 | safi = SAFI_EVPN; | |
128ea8ab | 2080 | |
d62a17ae | 2081 | rdrn = bgp_node_lookup(bgp->rib[afi][safi], (struct prefix *)&vpn->prd); |
2082 | if (rdrn && rdrn->info) { | |
2083 | table = (struct bgp_table *)rdrn->info; | |
2084 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2085 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
128ea8ab | 2086 | |
d62a17ae | 2087 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2088 | continue; | |
128ea8ab | 2089 | |
50f74cf1 | 2090 | delete_evpn_route_entry(bgp, afi, safi, rn, &ri); |
d62a17ae | 2091 | if (ri) |
2092 | bgp_process(bgp, rn, afi, safi); | |
2093 | } | |
2094 | } | |
128ea8ab | 2095 | |
d62a17ae | 2096 | /* Unlock RD node. */ |
2097 | if (rdrn) | |
2098 | bgp_unlock_node(rdrn); | |
128ea8ab | 2099 | |
d62a17ae | 2100 | return 0; |
128ea8ab | 2101 | } |
2102 | ||
2103 | /* | |
2104 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
2105 | * table as well as the per-VNI route table. | |
2106 | */ | |
d62a17ae | 2107 | static int delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2108 | { |
d62a17ae | 2109 | afi_t afi; |
2110 | safi_t safi; | |
2111 | struct bgp_node *rn; | |
2112 | struct bgp_info *ri; | |
128ea8ab | 2113 | |
d62a17ae | 2114 | afi = AFI_L2VPN; |
2115 | safi = SAFI_EVPN; | |
128ea8ab | 2116 | |
d62a17ae | 2117 | /* First, walk the global route table for this VNI's type-2 local |
2118 | * routes. | |
2119 | * EVPN routes are a 2-level table, first get the RD table. | |
2120 | */ | |
2121 | delete_global_type2_routes(bgp, vpn); | |
128ea8ab | 2122 | |
d62a17ae | 2123 | /* Next, walk this VNI's route table and delete local type-2 routes. */ |
2124 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2125 | rn = bgp_route_next(rn)) { | |
2126 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
128ea8ab | 2127 | |
d62a17ae | 2128 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2129 | continue; | |
128ea8ab | 2130 | |
50f74cf1 | 2131 | delete_evpn_route_entry(bgp, afi, safi, rn, &ri); |
128ea8ab | 2132 | |
d62a17ae | 2133 | /* Route entry in local table gets deleted immediately. */ |
2134 | if (ri) | |
2135 | bgp_info_reap(rn, ri); | |
2136 | } | |
128ea8ab | 2137 | |
d62a17ae | 2138 | return 0; |
128ea8ab | 2139 | } |
2140 | ||
50f74cf1 | 2141 | /* |
2142 | * Delete all routes in per ES route-table | |
2143 | */ | |
2144 | static int delete_all_es_routes(struct bgp *bgp, struct evpnes *es) | |
2145 | { | |
2146 | struct bgp_node *rn; | |
2147 | struct bgp_info *ri, *nextri; | |
2148 | ||
2149 | /* Walk this ES's route table and delete all routes. */ | |
2150 | for (rn = bgp_table_top(es->route_table); rn; | |
2151 | rn = bgp_route_next(rn)) { | |
2152 | for (ri = rn->info; (ri != NULL) && (nextri = ri->next, 1); | |
2153 | ri = nextri) { | |
2154 | bgp_info_delete(rn, ri); | |
2155 | bgp_info_reap(rn, ri); | |
2156 | } | |
2157 | } | |
2158 | ||
2159 | return 0; | |
2160 | } | |
2161 | ||
128ea8ab | 2162 | /* |
2163 | * Delete all routes in the per-VNI route table. | |
2164 | */ | |
d62a17ae | 2165 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2166 | { |
d62a17ae | 2167 | struct bgp_node *rn; |
2168 | struct bgp_info *ri, *nextri; | |
128ea8ab | 2169 | |
d62a17ae | 2170 | /* Walk this VNI's route table and delete all routes. */ |
2171 | for (rn = bgp_table_top(vpn->route_table); rn; | |
2172 | rn = bgp_route_next(rn)) { | |
2173 | for (ri = rn->info; (ri != NULL) && (nextri = ri->next, 1); | |
2174 | ri = nextri) { | |
2175 | bgp_info_delete(rn, ri); | |
2176 | bgp_info_reap(rn, ri); | |
2177 | } | |
2178 | } | |
128ea8ab | 2179 | |
d62a17ae | 2180 | return 0; |
128ea8ab | 2181 | } |
2182 | ||
2183 | /* | |
2184 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
2185 | * export RT getting modified or change to tunnel IP. Note that these | |
2186 | * situations need the route in the per-VNI table as well as the global | |
2187 | * table to be updated (as attributes change). | |
2188 | */ | |
d62a17ae | 2189 | static int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2190 | { |
d62a17ae | 2191 | int ret; |
2192 | struct prefix_evpn p; | |
128ea8ab | 2193 | |
d62a17ae | 2194 | /* Update and advertise the type-3 route (only one) followed by the |
2195 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
2196 | */ | |
2197 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2198 | ret = update_evpn_route(bgp, vpn, &p, 0); | |
2199 | if (ret) | |
2200 | return ret; | |
128ea8ab | 2201 | |
d62a17ae | 2202 | return update_all_type2_routes(bgp, vpn); |
128ea8ab | 2203 | } |
2204 | ||
50f74cf1 | 2205 | /* Delete (and withdraw) local routes for specified ES from global and ES table. |
2206 | * Also remove all other routes from the per ES table. | |
2207 | * Invoked when ES is deleted. | |
2208 | */ | |
2209 | static int delete_routes_for_es(struct bgp *bgp, struct evpnes *es) | |
2210 | { | |
2211 | int ret; | |
2212 | char buf[ESI_STR_LEN]; | |
2213 | struct prefix_evpn p; | |
2214 | ||
2215 | /* Delete and withdraw locally learnt ES route */ | |
2216 | build_evpn_type4_prefix(&p, &es->esi, es->originator_ip.ipaddr_v4); | |
2217 | ret = delete_evpn_type4_route(bgp, es, &p); | |
2218 | if (ret) { | |
2219 | zlog_err( | |
2220 | "%u failed to delete type-4 route for ESI %s", | |
2221 | bgp->vrf_id, | |
2222 | esi_to_str(&es->esi, buf, sizeof(buf))); | |
2223 | } | |
2224 | ||
2225 | /* Delete all routes from per ES table */ | |
2226 | return delete_all_es_routes(bgp, es); | |
2227 | } | |
2228 | ||
128ea8ab | 2229 | /* |
2230 | * Delete (and withdraw) local routes for specified VNI from the global | |
2231 | * table and per-VNI table. After this, remove all other routes from | |
2232 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
2233 | * (advertise-all-vni) being disabled. | |
2234 | */ | |
d62a17ae | 2235 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2236 | { |
d62a17ae | 2237 | int ret; |
2238 | struct prefix_evpn p; | |
128ea8ab | 2239 | |
d62a17ae | 2240 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2241 | * followed by type-3 routes (only one) - for this VNI. | |
2242 | */ | |
2243 | ret = delete_all_type2_routes(bgp, vpn); | |
2244 | if (ret) | |
2245 | return ret; | |
128ea8ab | 2246 | |
d62a17ae | 2247 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2248 | ret = delete_evpn_route(bgp, vpn, &p); | |
2249 | if (ret) | |
2250 | return ret; | |
128ea8ab | 2251 | |
d62a17ae | 2252 | /* Delete all routes from the per-VNI table. */ |
2253 | return delete_all_vni_routes(bgp, vpn); | |
128ea8ab | 2254 | } |
2255 | ||
2256 | /* | |
d1911c26 | 2257 | * There is a tunnel endpoint IP address change for this VNI, delete |
2258 | * prior type-3 route (if needed) and update. | |
2259 | * Note: Route re-advertisement happens elsewhere after other processing | |
2260 | * other changes. | |
128ea8ab | 2261 | */ |
d62a17ae | 2262 | static int handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
2263 | struct in_addr originator_ip) | |
128ea8ab | 2264 | { |
d62a17ae | 2265 | struct prefix_evpn p; |
128ea8ab | 2266 | |
ddd16ed5 MK |
2267 | /* If VNI is not live, we only need to update the originator ip */ |
2268 | if (!is_vni_live(vpn)) { | |
2269 | vpn->originator_ip = originator_ip; | |
2270 | return 0; | |
2271 | } | |
2272 | ||
db0e1937 MK |
2273 | /* Update the tunnel-ip hash */ |
2274 | bgp_tip_del(bgp, &vpn->originator_ip); | |
2275 | bgp_tip_add(bgp, &originator_ip); | |
2276 | ||
2277 | /* filter routes as martian nexthop db has changed */ | |
2278 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
2279 | ||
d62a17ae | 2280 | /* Need to withdraw type-3 route as the originator IP is part |
2281 | * of the key. | |
2282 | */ | |
2283 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2284 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 2285 | |
d62a17ae | 2286 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
2287 | vpn->originator_ip = originator_ip; | |
d1911c26 | 2288 | return 0; |
128ea8ab | 2289 | } |
2290 | ||
50f74cf1 | 2291 | /* Install EVPN route entry in ES */ |
2292 | static int install_evpn_route_entry_in_es(struct bgp *bgp, | |
2293 | struct evpnes *es, | |
2294 | struct prefix_evpn *p, | |
2295 | struct bgp_info *parent_ri) | |
2296 | { | |
2297 | int ret = 0; | |
2298 | struct bgp_node *rn = NULL; | |
2299 | struct bgp_info *ri = NULL; | |
2300 | struct attr *attr_new = NULL; | |
2301 | ||
2302 | /* Create (or fetch) route within the VNI. | |
2303 | * NOTE: There is no RD here. | |
2304 | */ | |
2305 | rn = bgp_node_get(es->route_table, (struct prefix *)p); | |
2306 | ||
2307 | /* Check if route entry is already present. */ | |
2308 | for (ri = rn->info; ri; ri = ri->next) | |
2309 | if (ri->extra && | |
2310 | (struct bgp_info *)ri->extra->parent == parent_ri) | |
2311 | break; | |
2312 | ||
2313 | if (!ri) { | |
2314 | /* Add (or update) attribute to hash. */ | |
2315 | attr_new = bgp_attr_intern(parent_ri->attr); | |
2316 | ||
2317 | /* Create new route with its attribute. */ | |
2318 | ri = info_make(parent_ri->type, BGP_ROUTE_IMPORTED, 0, | |
2319 | parent_ri->peer, attr_new, rn); | |
2320 | SET_FLAG(ri->flags, BGP_INFO_VALID); | |
2321 | bgp_info_extra_get(ri); | |
2322 | ri->extra->parent = parent_ri; | |
2323 | bgp_info_add(rn, ri); | |
2324 | } else { | |
2325 | if (attrhash_cmp(ri->attr, parent_ri->attr) | |
2326 | && !CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) { | |
2327 | bgp_unlock_node(rn); | |
2328 | return 0; | |
2329 | } | |
2330 | /* The attribute has changed. */ | |
2331 | /* Add (or update) attribute to hash. */ | |
2332 | attr_new = bgp_attr_intern(parent_ri->attr); | |
2333 | ||
2334 | /* Restore route, if needed. */ | |
2335 | if (CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) | |
2336 | bgp_info_restore(rn, ri); | |
2337 | ||
2338 | /* Mark if nexthop has changed. */ | |
2339 | if (!IPV4_ADDR_SAME(&ri->attr->nexthop, &attr_new->nexthop)) | |
2340 | SET_FLAG(ri->flags, BGP_INFO_IGP_CHANGED); | |
2341 | ||
2342 | /* Unintern existing, set to new. */ | |
2343 | bgp_attr_unintern(&ri->attr); | |
2344 | ri->attr = attr_new; | |
2345 | ri->uptime = bgp_clock(); | |
2346 | } | |
2347 | ||
2348 | /* Perform route selection and update zebra, if required. */ | |
2349 | ret = evpn_es_route_select_install(bgp, es, rn); | |
2350 | return ret; | |
2351 | } | |
2352 | ||
d3135ba3 | 2353 | /* |
2354 | * Install route entry into the VRF routing table and invoke route selection. | |
2355 | */ | |
2356 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
2357 | struct prefix_evpn *evp, | |
2358 | struct bgp_info *parent_ri) | |
2359 | { | |
2360 | struct bgp_node *rn; | |
2361 | struct bgp_info *ri; | |
1ec31309 | 2362 | struct attr attr; |
d3135ba3 | 2363 | struct attr *attr_new; |
c4edf708 | 2364 | int ret = 0; |
d3135ba3 | 2365 | struct prefix p; |
2366 | struct prefix *pp = &p; | |
2367 | afi_t afi = 0; | |
2368 | safi_t safi = 0; | |
1eb88002 MK |
2369 | char buf[PREFIX_STRLEN]; |
2370 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 2371 | |
2372 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2373 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2374 | |
1eb88002 | 2375 | if (bgp_debug_zebra(NULL)) { |
996c9314 LB |
2376 | zlog_debug( |
2377 | "installing evpn prefix %s as ip prefix %s in vrf %s", | |
2378 | prefix2str(evp, buf, sizeof(buf)), | |
2379 | prefix2str(pp, buf1, sizeof(buf)), | |
2380 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1eb88002 MK |
2381 | } |
2382 | ||
d3135ba3 | 2383 | /* Create (or fetch) route within the VRF. */ |
2384 | /* NOTE: There is no RD here. */ | |
3714a385 | 2385 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2386 | afi = AFI_IP; |
2387 | safi = SAFI_UNICAST; | |
2388 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
3714a385 | 2389 | } else if (is_evpn_prefix_ipaddr_v6(evp)) { |
d3135ba3 | 2390 | afi = AFI_IP6; |
2391 | safi = SAFI_UNICAST; | |
2392 | rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp); | |
2393 | } else | |
2394 | return 0; | |
2395 | ||
1ec31309 | 2396 | /* EVPN routes currently only support a IPv4 next hop which corresponds |
2397 | * to the remote VTEP. When importing into a VRF, if it is IPv6 host | |
450e362d | 2398 | * or prefix route, we have to convert the next hop to an IPv4-mapped |
2399 | * address for the rest of the code to flow through. In the case of IPv4, | |
2400 | * make sure to set the flag for next hop attribute. | |
1ec31309 | 2401 | */ |
2402 | bgp_attr_dup(&attr, parent_ri->attr); | |
2403 | if (afi == AFI_IP6) | |
2404 | evpn_convert_nexthop_to_ipv6(&attr); | |
450e362d | 2405 | else |
2406 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); | |
1ec31309 | 2407 | |
d3135ba3 | 2408 | /* Check if route entry is already present. */ |
2409 | for (ri = rn->info; ri; ri = ri->next) | |
2410 | if (ri->extra | |
2411 | && (struct bgp_info *)ri->extra->parent == parent_ri) | |
2412 | break; | |
2413 | ||
2414 | if (!ri) { | |
2415 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2416 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2417 | |
2418 | /* Create new route with its attribute. */ | |
90f4f482 | 2419 | ri = info_make(parent_ri->type, BGP_ROUTE_IMPORTED, 0, |
d3135ba3 | 2420 | parent_ri->peer, attr_new, rn); |
2421 | SET_FLAG(ri->flags, BGP_INFO_VALID); | |
2422 | bgp_info_extra_get(ri); | |
528cd74f | 2423 | ri->extra->parent = bgp_info_lock(parent_ri); |
7c82b312 | 2424 | bgp_lock_node((struct bgp_node *)parent_ri->net); |
b57ba6d2 | 2425 | if (parent_ri->extra) { |
d3135ba3 | 2426 | memcpy(&ri->extra->label, &parent_ri->extra->label, |
b57ba6d2 MK |
2427 | sizeof(ri->extra->label)); |
2428 | ri->extra->num_labels = parent_ri->extra->num_labels; | |
2429 | } | |
d3135ba3 | 2430 | bgp_info_add(rn, ri); |
2431 | } else { | |
1ec31309 | 2432 | if (attrhash_cmp(ri->attr, &attr) |
d3135ba3 | 2433 | && !CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) { |
2434 | bgp_unlock_node(rn); | |
2435 | return 0; | |
2436 | } | |
2437 | /* The attribute has changed. */ | |
2438 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2439 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2440 | |
2441 | /* Restore route, if needed. */ | |
2442 | if (CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) | |
2443 | bgp_info_restore(rn, ri); | |
2444 | ||
2445 | /* Mark if nexthop has changed. */ | |
1ec31309 | 2446 | if ((afi == AFI_IP && |
2447 | !IPV4_ADDR_SAME(&ri->attr->nexthop, &attr_new->nexthop)) || | |
2448 | (afi == AFI_IP6 && | |
2449 | !IPV6_ADDR_SAME(&ri->attr->mp_nexthop_global, | |
2450 | &attr_new->mp_nexthop_global))) | |
d3135ba3 | 2451 | SET_FLAG(ri->flags, BGP_INFO_IGP_CHANGED); |
2452 | ||
2453 | /* Unintern existing, set to new. */ | |
2454 | bgp_attr_unintern(&ri->attr); | |
2455 | ri->attr = attr_new; | |
2456 | ri->uptime = bgp_clock(); | |
2457 | } | |
2458 | ||
2459 | /* Perform route selection and update zebra, if required. */ | |
1eb88002 | 2460 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 2461 | |
2462 | return ret; | |
2463 | } | |
2464 | ||
128ea8ab | 2465 | /* |
2466 | * Install route entry into the VNI routing table and invoke route selection. | |
2467 | */ | |
d62a17ae | 2468 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
2469 | struct prefix_evpn *p, | |
2470 | struct bgp_info *parent_ri) | |
2471 | { | |
2472 | struct bgp_node *rn; | |
2473 | struct bgp_info *ri; | |
2474 | struct attr *attr_new; | |
2475 | int ret; | |
2476 | ||
2477 | /* Create (or fetch) route within the VNI. */ | |
2478 | /* NOTE: There is no RD here. */ | |
2479 | rn = bgp_node_get(vpn->route_table, (struct prefix *)p); | |
2480 | ||
2481 | /* Check if route entry is already present. */ | |
2482 | for (ri = rn->info; ri; ri = ri->next) | |
2483 | if (ri->extra | |
2484 | && (struct bgp_info *)ri->extra->parent == parent_ri) | |
2485 | break; | |
2486 | ||
2487 | if (!ri) { | |
2488 | /* Add (or update) attribute to hash. */ | |
2489 | attr_new = bgp_attr_intern(parent_ri->attr); | |
2490 | ||
2491 | /* Create new route with its attribute. */ | |
90f4f482 | 2492 | ri = info_make(parent_ri->type, BGP_ROUTE_IMPORTED, 0, |
d62a17ae | 2493 | parent_ri->peer, attr_new, rn); |
2494 | SET_FLAG(ri->flags, BGP_INFO_VALID); | |
2495 | bgp_info_extra_get(ri); | |
528cd74f | 2496 | ri->extra->parent = bgp_info_lock(parent_ri); |
7c82b312 | 2497 | bgp_lock_node((struct bgp_node *)parent_ri->net); |
b57ba6d2 | 2498 | if (parent_ri->extra) { |
d62a17ae | 2499 | memcpy(&ri->extra->label, &parent_ri->extra->label, |
b57ba6d2 MK |
2500 | sizeof(ri->extra->label)); |
2501 | ri->extra->num_labels = parent_ri->extra->num_labels; | |
2502 | } | |
d62a17ae | 2503 | bgp_info_add(rn, ri); |
2504 | } else { | |
2505 | if (attrhash_cmp(ri->attr, parent_ri->attr) | |
2506 | && !CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) { | |
2507 | bgp_unlock_node(rn); | |
2508 | return 0; | |
2509 | } | |
2510 | /* The attribute has changed. */ | |
2511 | /* Add (or update) attribute to hash. */ | |
2512 | attr_new = bgp_attr_intern(parent_ri->attr); | |
2513 | ||
50f74cf1 | 2514 | /* Restore route, if needed. */ |
2515 | if (CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) | |
2516 | bgp_info_restore(rn, ri); | |
2517 | ||
2518 | /* Mark if nexthop has changed. */ | |
2519 | if (!IPV4_ADDR_SAME(&ri->attr->nexthop, &attr_new->nexthop)) | |
2520 | SET_FLAG(ri->flags, BGP_INFO_IGP_CHANGED); | |
2521 | ||
2522 | /* Unintern existing, set to new. */ | |
2523 | bgp_attr_unintern(&ri->attr); | |
2524 | ri->attr = attr_new; | |
2525 | ri->uptime = bgp_clock(); | |
2526 | } | |
2527 | ||
2528 | /* Perform route selection and update zebra, if required. */ | |
2529 | ret = evpn_route_select_install(bgp, vpn, rn); | |
2530 | ||
2531 | return ret; | |
2532 | } | |
2533 | ||
2534 | /* Uninstall EVPN route entry from ES route table */ | |
2535 | static int uninstall_evpn_route_entry_in_es(struct bgp *bgp, | |
2536 | struct evpnes *es, | |
2537 | struct prefix_evpn *p, | |
2538 | struct bgp_info *parent_ri) | |
2539 | { | |
2540 | int ret; | |
2541 | struct bgp_node *rn; | |
2542 | struct bgp_info *ri; | |
2543 | ||
2544 | if (!es->route_table) | |
2545 | return 0; | |
2546 | ||
2547 | /* Locate route within the ESI. | |
2548 | * NOTE: There is no RD here. | |
2549 | */ | |
2550 | rn = bgp_node_lookup(es->route_table, (struct prefix *)p); | |
2551 | if (!rn) | |
2552 | return 0; | |
2553 | ||
2554 | /* Find matching route entry. */ | |
2555 | for (ri = rn->info; ri; ri = ri->next) | |
2556 | if (ri->extra && | |
2557 | (struct bgp_info *)ri->extra->parent == parent_ri) | |
2558 | break; | |
d62a17ae | 2559 | |
50f74cf1 | 2560 | if (!ri) |
2561 | return 0; | |
d62a17ae | 2562 | |
50f74cf1 | 2563 | /* Mark entry for deletion */ |
2564 | bgp_info_delete(rn, ri); | |
d62a17ae | 2565 | |
2566 | /* Perform route selection and update zebra, if required. */ | |
50f74cf1 | 2567 | ret = evpn_es_route_select_install(bgp, es, rn); |
2568 | ||
2569 | /* Unlock route node. */ | |
2570 | bgp_unlock_node(rn); | |
d62a17ae | 2571 | |
2572 | return ret; | |
128ea8ab | 2573 | } |
2574 | ||
d3135ba3 | 2575 | /* |
2576 | * Uninstall route entry from the VRF routing table and send message | |
2577 | * to zebra, if appropriate. | |
2578 | */ | |
2579 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
2580 | struct prefix_evpn *evp, | |
2581 | struct bgp_info *parent_ri) | |
2582 | { | |
2583 | struct bgp_node *rn; | |
2584 | struct bgp_info *ri; | |
c4edf708 | 2585 | int ret = 0; |
d3135ba3 | 2586 | struct prefix p; |
2587 | struct prefix *pp = &p; | |
2588 | afi_t afi = 0; | |
2589 | safi_t safi = 0; | |
1eb88002 MK |
2590 | char buf[PREFIX_STRLEN]; |
2591 | char buf1[PREFIX_STRLEN]; | |
d3135ba3 | 2592 | |
2593 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2594 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2595 | |
1eb88002 | 2596 | if (bgp_debug_zebra(NULL)) { |
996c9314 LB |
2597 | zlog_debug( |
2598 | "uninstalling evpn prefix %s as ip prefix %s in vrf %s", | |
2599 | prefix2str(evp, buf, sizeof(buf)), | |
2600 | prefix2str(pp, buf1, sizeof(buf)), | |
2601 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
1eb88002 MK |
2602 | } |
2603 | ||
d3135ba3 | 2604 | /* Locate route within the VRF. */ |
2605 | /* NOTE: There is no RD here. */ | |
3714a385 | 2606 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2607 | afi = AFI_IP; |
2608 | safi = SAFI_UNICAST; | |
2609 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
2610 | } else { | |
2611 | afi = AFI_IP6; | |
2612 | safi = SAFI_UNICAST; | |
2613 | rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); | |
2614 | } | |
2615 | ||
2616 | if (!rn) | |
2617 | return 0; | |
2618 | ||
2619 | /* Find matching route entry. */ | |
2620 | for (ri = rn->info; ri; ri = ri->next) | |
2621 | if (ri->extra | |
2622 | && (struct bgp_info *)ri->extra->parent == parent_ri) | |
2623 | break; | |
2624 | ||
2625 | if (!ri) | |
2626 | return 0; | |
2627 | ||
2628 | /* Mark entry for deletion */ | |
2629 | bgp_info_delete(rn, ri); | |
2630 | ||
2631 | /* Perform route selection and update zebra, if required. */ | |
1eb88002 | 2632 | bgp_process(bgp_vrf, rn, afi, safi); |
d3135ba3 | 2633 | |
2634 | /* Unlock route node. */ | |
2635 | bgp_unlock_node(rn); | |
2636 | ||
2637 | return ret; | |
2638 | } | |
2639 | ||
128ea8ab | 2640 | /* |
2641 | * Uninstall route entry from the VNI routing table and send message | |
2642 | * to zebra, if appropriate. | |
2643 | */ | |
d62a17ae | 2644 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
2645 | struct prefix_evpn *p, | |
2646 | struct bgp_info *parent_ri) | |
128ea8ab | 2647 | { |
d62a17ae | 2648 | struct bgp_node *rn; |
2649 | struct bgp_info *ri; | |
2650 | int ret; | |
128ea8ab | 2651 | |
d62a17ae | 2652 | /* Locate route within the VNI. */ |
2653 | /* NOTE: There is no RD here. */ | |
2654 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)p); | |
2655 | if (!rn) | |
2656 | return 0; | |
128ea8ab | 2657 | |
d62a17ae | 2658 | /* Find matching route entry. */ |
2659 | for (ri = rn->info; ri; ri = ri->next) | |
2660 | if (ri->extra | |
2661 | && (struct bgp_info *)ri->extra->parent == parent_ri) | |
2662 | break; | |
128ea8ab | 2663 | |
d62a17ae | 2664 | if (!ri) |
2665 | return 0; | |
128ea8ab | 2666 | |
d62a17ae | 2667 | /* Mark entry for deletion */ |
2668 | bgp_info_delete(rn, ri); | |
128ea8ab | 2669 | |
d62a17ae | 2670 | /* Perform route selection and update zebra, if required. */ |
2671 | ret = evpn_route_select_install(bgp, vpn, rn); | |
128ea8ab | 2672 | |
d62a17ae | 2673 | /* Unlock route node. */ |
2674 | bgp_unlock_node(rn); | |
128ea8ab | 2675 | |
d62a17ae | 2676 | return ret; |
128ea8ab | 2677 | } |
2678 | ||
50f74cf1 | 2679 | /* |
2680 | * Given a prefix, see if it belongs to ES. | |
2681 | */ | |
2682 | static int is_prefix_matching_for_es(struct prefix_evpn *p, | |
2683 | struct evpnes *es) | |
2684 | { | |
2685 | /* if not an ES route return false */ | |
2686 | if (p->prefix.route_type != BGP_EVPN_ES_ROUTE) | |
2687 | return 0; | |
2688 | ||
2689 | if (memcmp(&p->prefix.es_addr.esi, &es->esi, sizeof(esi_t)) == 0) | |
2690 | return 1; | |
2691 | ||
2692 | return 0; | |
2693 | } | |
2694 | ||
5ba238b7 MK |
2695 | /* |
2696 | * Given a route entry and a VRF, see if this route entry should be | |
2697 | * imported into the VRF i.e., RTs match. | |
2698 | */ | |
996c9314 | 2699 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, struct bgp_info *ri) |
5ba238b7 MK |
2700 | { |
2701 | struct attr *attr = ri->attr; | |
2702 | struct ecommunity *ecom; | |
2703 | int i; | |
2704 | ||
2705 | assert(attr); | |
2706 | /* Route should have valid RT to be even considered. */ | |
2707 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2708 | return 0; | |
2709 | ||
2710 | ecom = attr->ecommunity; | |
2711 | if (!ecom || !ecom->size) | |
2712 | return 0; | |
2713 | ||
2714 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2715 | * matches, we're done. | |
2716 | */ | |
2717 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2718 | uint8_t *pnt; |
2719 | uint8_t type, sub_type; | |
5ba238b7 MK |
2720 | struct ecommunity_val *eval; |
2721 | struct ecommunity_val eval_tmp; | |
2722 | struct vrf_irt_node *irt; | |
2723 | ||
2724 | /* Only deal with RTs */ | |
2725 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2726 | eval = (struct ecommunity_val *)(ecom->val | |
2727 | + (i * ECOMMUNITY_SIZE)); | |
2728 | type = *pnt++; | |
2729 | sub_type = *pnt++; | |
2730 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2731 | continue; | |
2732 | ||
2733 | /* See if this RT matches specified VNIs import RTs */ | |
2734 | irt = lookup_vrf_import_rt(eval); | |
5d9cbca2 | 2735 | if (irt) |
5ba238b7 MK |
2736 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2737 | return 1; | |
2738 | ||
2739 | /* Also check for non-exact match. In this, we mask out the AS | |
2740 | * and | |
2741 | * only check on the local-admin sub-field. This is to | |
2742 | * facilitate using | |
2743 | * VNI as the RT for EBGP peering too. | |
2744 | */ | |
2745 | irt = NULL; | |
2746 | if (type == ECOMMUNITY_ENCODE_AS | |
2747 | || type == ECOMMUNITY_ENCODE_AS4 | |
2748 | || type == ECOMMUNITY_ENCODE_IP) { | |
2749 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
2750 | mask_ecom_global_admin(&eval_tmp, eval); | |
2751 | irt = lookup_vrf_import_rt(&eval_tmp); | |
2752 | } | |
5d9cbca2 | 2753 | if (irt) |
5ba238b7 MK |
2754 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2755 | return 1; | |
2756 | } | |
2757 | ||
2758 | return 0; | |
2759 | } | |
2760 | ||
128ea8ab | 2761 | /* |
2762 | * Given a route entry and a VNI, see if this route entry should be | |
2763 | * imported into the VNI i.e., RTs match. | |
2764 | */ | |
d62a17ae | 2765 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
2766 | struct bgp_info *ri) | |
2767 | { | |
2768 | struct attr *attr = ri->attr; | |
2769 | struct ecommunity *ecom; | |
2770 | int i; | |
2771 | ||
2772 | assert(attr); | |
2773 | /* Route should have valid RT to be even considered. */ | |
2774 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2775 | return 0; | |
2776 | ||
2777 | ecom = attr->ecommunity; | |
2778 | if (!ecom || !ecom->size) | |
2779 | return 0; | |
2780 | ||
2781 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2782 | * matches, we're done. | |
2783 | */ | |
2784 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2785 | uint8_t *pnt; |
2786 | uint8_t type, sub_type; | |
d62a17ae | 2787 | struct ecommunity_val *eval; |
2788 | struct ecommunity_val eval_tmp; | |
2789 | struct irt_node *irt; | |
2790 | ||
2791 | /* Only deal with RTs */ | |
2792 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
2793 | eval = (struct ecommunity_val *)(ecom->val | |
2794 | + (i * ECOMMUNITY_SIZE)); | |
2795 | type = *pnt++; | |
2796 | sub_type = *pnt++; | |
2797 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2798 | continue; | |
2799 | ||
2800 | /* See if this RT matches specified VNIs import RTs */ | |
2801 | irt = lookup_import_rt(bgp, eval); | |
b1ab0dfe | 2802 | if (irt) |
d62a17ae | 2803 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2804 | return 1; | |
2805 | ||
2806 | /* Also check for non-exact match. In this, we mask out the AS | |
2807 | * and | |
2808 | * only check on the local-admin sub-field. This is to | |
2809 | * facilitate using | |
2810 | * VNI as the RT for EBGP peering too. | |
2811 | */ | |
2812 | irt = NULL; | |
2813 | if (type == ECOMMUNITY_ENCODE_AS | |
2814 | || type == ECOMMUNITY_ENCODE_AS4 | |
2815 | || type == ECOMMUNITY_ENCODE_IP) { | |
2816 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
2817 | mask_ecom_global_admin(&eval_tmp, eval); | |
2818 | irt = lookup_import_rt(bgp, &eval_tmp); | |
2819 | } | |
b1ab0dfe | 2820 | if (irt) |
d62a17ae | 2821 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2822 | return 1; | |
2823 | } | |
2824 | ||
2825 | return 0; | |
128ea8ab | 2826 | } |
2827 | ||
50f74cf1 | 2828 | static int install_uninstall_routes_for_es(struct bgp *bgp, |
2829 | struct evpnes *es, | |
2830 | int install) | |
2831 | { | |
2832 | int ret; | |
2833 | afi_t afi; | |
2834 | safi_t safi; | |
2835 | char buf[PREFIX_STRLEN]; | |
2836 | char buf1[ESI_STR_LEN]; | |
2837 | struct bgp_node *rd_rn, *rn; | |
2838 | struct bgp_table *table; | |
2839 | struct bgp_info *ri; | |
2840 | ||
2841 | afi = AFI_L2VPN; | |
2842 | safi = SAFI_EVPN; | |
2843 | ||
2bb9eff4 DS |
2844 | /* |
2845 | * Walk entire global routing table and evaluate routes which could be | |
50f74cf1 | 2846 | * imported into this VRF. Note that we need to loop through all global |
2847 | * routes to determine which route matches the import rt on vrf | |
2848 | */ | |
2849 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
2850 | rd_rn = bgp_route_next(rd_rn)) { | |
2851 | table = (struct bgp_table *)(rd_rn->info); | |
2852 | if (!table) | |
2853 | continue; | |
2854 | ||
2855 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2856 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2857 | ||
2858 | for (ri = rn->info; ri; ri = ri->next) { | |
2bb9eff4 DS |
2859 | /* |
2860 | * Consider "valid" remote routes applicable for | |
50f74cf1 | 2861 | * this ES. |
2862 | */ | |
2863 | if (!(CHECK_FLAG(ri->flags, BGP_INFO_VALID) | |
2864 | && ri->type == ZEBRA_ROUTE_BGP | |
2865 | && ri->sub_type == BGP_ROUTE_NORMAL)) | |
2866 | continue; | |
2867 | ||
2bb9eff4 DS |
2868 | if (!is_prefix_matching_for_es(evp, es)) |
2869 | continue; | |
50f74cf1 | 2870 | |
2bb9eff4 DS |
2871 | if (install) |
2872 | ret = install_evpn_route_entry_in_es( | |
2873 | bgp, es, evp, ri); | |
2874 | else | |
2875 | ret = uninstall_evpn_route_entry_in_es( | |
2876 | bgp, es, evp, ri); | |
2877 | ||
2878 | if (ret) { | |
2879 | zlog_err( | |
2880 | "Failed to %s EVPN %s route in ESI %s", | |
2881 | install ? "install" | |
2882 | : "uninstall", | |
2883 | prefix2str(evp, buf, | |
2884 | sizeof(buf)), | |
2885 | esi_to_str(&es->esi, buf1, | |
2886 | sizeof(buf1))); | |
2887 | return ret; | |
50f74cf1 | 2888 | } |
2889 | } | |
2890 | } | |
2891 | } | |
2892 | return 0; | |
2893 | } | |
2894 | ||
5ba238b7 MK |
2895 | /* |
2896 | * Install or uninstall mac-ip routes are appropriate for this | |
2897 | * particular VRF. | |
2898 | */ | |
996c9314 | 2899 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, int install) |
5ba238b7 MK |
2900 | { |
2901 | afi_t afi; | |
2902 | safi_t safi; | |
2903 | struct bgp_node *rd_rn, *rn; | |
2904 | struct bgp_table *table; | |
2905 | struct bgp_info *ri; | |
2906 | int ret; | |
2907 | char buf[PREFIX_STRLEN]; | |
2908 | struct bgp *bgp_def = NULL; | |
2909 | ||
2910 | afi = AFI_L2VPN; | |
2911 | safi = SAFI_EVPN; | |
2912 | bgp_def = bgp_get_default(); | |
2913 | if (!bgp_def) | |
2914 | return -1; | |
2915 | ||
2916 | /* Walk entire global routing table and evaluate routes which could be | |
2917 | * imported into this VRF. Note that we need to loop through all global | |
2918 | * routes to determine which route matches the import rt on vrf | |
2919 | */ | |
2920 | for (rd_rn = bgp_table_top(bgp_def->rib[afi][safi]); rd_rn; | |
2921 | rd_rn = bgp_route_next(rd_rn)) { | |
2922 | table = (struct bgp_table *)(rd_rn->info); | |
2923 | if (!table) | |
2924 | continue; | |
2925 | ||
2926 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
2927 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
2928 | ||
1eb88002 | 2929 | /* if not mac-ip route skip this route */ |
996c9314 LB |
2930 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
2931 | || evp->prefix.route_type | |
2932 | == BGP_EVPN_IP_PREFIX_ROUTE)) | |
5ba238b7 MK |
2933 | continue; |
2934 | ||
1eb88002 | 2935 | /* if not a mac+ip route skip this route */ |
3714a385 | 2936 | if (!(is_evpn_prefix_ipaddr_v4(evp) |
2937 | || is_evpn_prefix_ipaddr_v6(evp))) | |
1eb88002 MK |
2938 | continue; |
2939 | ||
5ba238b7 MK |
2940 | for (ri = rn->info; ri; ri = ri->next) { |
2941 | /* Consider "valid" remote routes applicable for | |
523cafc4 | 2942 | * this VRF. |
2943 | */ | |
5ba238b7 MK |
2944 | if (!(CHECK_FLAG(ri->flags, BGP_INFO_VALID) |
2945 | && ri->type == ZEBRA_ROUTE_BGP | |
2946 | && ri->sub_type == BGP_ROUTE_NORMAL)) | |
2947 | continue; | |
2948 | ||
2949 | if (is_route_matching_for_vrf(bgp_vrf, ri)) { | |
2950 | if (install) | |
996c9314 | 2951 | ret = install_evpn_route_entry_in_vrf( |
5ba238b7 MK |
2952 | bgp_vrf, evp, ri); |
2953 | else | |
996c9314 | 2954 | ret = uninstall_evpn_route_entry_in_vrf( |
5ba238b7 MK |
2955 | bgp_vrf, evp, ri); |
2956 | ||
2957 | if (ret) { | |
2958 | zlog_err( | |
2959 | "Failed to %s EVPN %s route in VRF %s", | |
2960 | install ? "install" | |
2961 | : "uninstall", | |
2962 | prefix2str(evp, buf, | |
2963 | sizeof(buf)), | |
996c9314 LB |
2964 | vrf_id_to_name( |
2965 | bgp_vrf->vrf_id)); | |
5ba238b7 MK |
2966 | return ret; |
2967 | } | |
2968 | } | |
2969 | } | |
2970 | } | |
2971 | } | |
2972 | ||
2973 | return 0; | |
2974 | } | |
2975 | ||
128ea8ab | 2976 | /* |
2977 | * Install or uninstall routes of specified type that are appropriate for this | |
2978 | * particular VNI. | |
2979 | */ | |
d62a17ae | 2980 | static int install_uninstall_routes_for_vni(struct bgp *bgp, |
2981 | struct bgpevpn *vpn, | |
2982 | bgp_evpn_route_type rtype, | |
2983 | int install) | |
2984 | { | |
0291c246 MK |
2985 | afi_t afi; |
2986 | safi_t safi; | |
2987 | struct bgp_node *rd_rn, *rn; | |
2988 | struct bgp_table *table; | |
2989 | struct bgp_info *ri; | |
2990 | int ret; | |
d62a17ae | 2991 | |
2992 | afi = AFI_L2VPN; | |
2993 | safi = SAFI_EVPN; | |
2994 | ||
2995 | /* Walk entire global routing table and evaluate routes which could be | |
2996 | * imported into this VPN. Note that we cannot just look at the routes | |
2997 | * for | |
2998 | * the VNI's RD - remote routes applicable for this VNI could have any | |
2999 | * RD. | |
3000 | */ | |
3001 | /* EVPN routes are a 2-level table. */ | |
3002 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
3003 | rd_rn = bgp_route_next(rd_rn)) { | |
3004 | table = (struct bgp_table *)(rd_rn->info); | |
3005 | if (!table) | |
3006 | continue; | |
3007 | ||
3008 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
3009 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
3010 | ||
3011 | if (evp->prefix.route_type != rtype) | |
3012 | continue; | |
3013 | ||
3014 | for (ri = rn->info; ri; ri = ri->next) { | |
3015 | /* Consider "valid" remote routes applicable for | |
3016 | * this VNI. */ | |
3017 | if (!(CHECK_FLAG(ri->flags, BGP_INFO_VALID) | |
3018 | && ri->type == ZEBRA_ROUTE_BGP | |
3019 | && ri->sub_type == BGP_ROUTE_NORMAL)) | |
3020 | continue; | |
3021 | ||
3022 | if (is_route_matching_for_vni(bgp, vpn, ri)) { | |
3023 | if (install) | |
3024 | ret = install_evpn_route_entry( | |
60466a63 | 3025 | bgp, vpn, evp, ri); |
d62a17ae | 3026 | else |
3027 | ret = uninstall_evpn_route_entry( | |
3028 | bgp, vpn, evp, ri); | |
3029 | ||
3030 | if (ret) { | |
3031 | zlog_err( | |
3032 | "%u: Failed to %s EVPN %s route in VNI %u", | |
3033 | bgp->vrf_id, | |
3034 | install ? "install" | |
3035 | : "uninstall", | |
3036 | rtype == BGP_EVPN_MAC_IP_ROUTE | |
3037 | ? "MACIP" | |
3038 | : "IMET", | |
3039 | vpn->vni); | |
3040 | return ret; | |
3041 | } | |
3042 | } | |
3043 | } | |
3044 | } | |
3045 | } | |
3046 | ||
3047 | return 0; | |
128ea8ab | 3048 | } |
3049 | ||
50f74cf1 | 3050 | /* Install any existing remote ES routes applicable for this ES into its routing |
3051 | * table. This is invoked when ES comes up. | |
3052 | */ | |
3053 | static int install_routes_for_es(struct bgp *bgp, struct evpnes *es) | |
3054 | { | |
3055 | return install_uninstall_routes_for_es(bgp, es, 1); | |
3056 | } | |
3057 | ||
3058 | ||
5ba238b7 | 3059 | /* Install any existing remote routes applicable for this VRF into VRF RIB. This |
523cafc4 | 3060 | * is invoked upon l3vni-add or l3vni import rt change |
3061 | */ | |
5ba238b7 MK |
3062 | static int install_routes_for_vrf(struct bgp *bgp_vrf) |
3063 | { | |
3064 | install_uninstall_routes_for_vrf(bgp_vrf, 1); | |
3065 | return 0; | |
3066 | } | |
3067 | ||
128ea8ab | 3068 | /* |
3069 | * Install any existing remote routes applicable for this VNI into its | |
3070 | * routing table. This is invoked when a VNI becomes "live" or its Import | |
3071 | * RT is changed. | |
3072 | */ | |
d62a17ae | 3073 | static int install_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3074 | { |
d62a17ae | 3075 | int ret; |
128ea8ab | 3076 | |
d62a17ae | 3077 | /* Install type-3 routes followed by type-2 routes - the ones applicable |
3078 | * for this VNI. | |
3079 | */ | |
3080 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, | |
3081 | 1); | |
3082 | if (ret) | |
3083 | return ret; | |
128ea8ab | 3084 | |
d62a17ae | 3085 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, |
3086 | 1); | |
128ea8ab | 3087 | } |
3088 | ||
5ba238b7 MK |
3089 | /* uninstall routes from l3vni vrf. */ |
3090 | static int uninstall_routes_for_vrf(struct bgp *bgp_vrf) | |
3091 | { | |
3092 | install_uninstall_routes_for_vrf(bgp_vrf, 0); | |
3093 | return 0; | |
3094 | } | |
3095 | ||
90e60aa7 | 3096 | /* |
3097 | * Uninstall any existing remote routes for this VNI. One scenario in which | |
3098 | * this is invoked is upon an import RT change. | |
3099 | */ | |
d62a17ae | 3100 | static int uninstall_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3101 | { |
d62a17ae | 3102 | int ret; |
90e60aa7 | 3103 | |
d62a17ae | 3104 | /* Uninstall type-2 routes followed by type-3 routes - the ones |
3105 | * applicable | |
3106 | * for this VNI. | |
3107 | */ | |
3108 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, | |
3109 | 0); | |
3110 | if (ret) | |
3111 | return ret; | |
90e60aa7 | 3112 | |
d62a17ae | 3113 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, |
3114 | 0); | |
90e60aa7 | 3115 | } |
3116 | ||
50f74cf1 | 3117 | /* Install or unistall route in ES */ |
3118 | static int install_uninstall_route_in_es(struct bgp *bgp, struct evpnes *es, | |
3119 | afi_t afi, safi_t safi, | |
3120 | struct prefix_evpn *evp, | |
3121 | struct bgp_info *ri, | |
3122 | int install) | |
3123 | { | |
3124 | int ret = 0; | |
3125 | char buf[ESI_STR_LEN]; | |
3126 | ||
3127 | if (install) | |
3128 | ret = install_evpn_route_entry_in_es(bgp, es, evp, ri); | |
3129 | else | |
3130 | ret = uninstall_evpn_route_entry_in_es(bgp, es, evp, ri); | |
3131 | ||
3132 | if (ret) { | |
3133 | zlog_err("%u: Failed to %s EVPN %s route in ESI %s", | |
3134 | bgp->vrf_id, install ? "install" : "uninstall", | |
3135 | "ES", | |
3136 | esi_to_str(&evp->prefix.es_addr.esi, buf, | |
3137 | sizeof(buf))); | |
3138 | return ret; | |
3139 | } | |
3140 | return 0; | |
3141 | } | |
3142 | ||
d3135ba3 | 3143 | /* |
3144 | * Install or uninstall route in matching VRFs (list). | |
3145 | */ | |
3146 | static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi, | |
3147 | safi_t safi, struct prefix_evpn *evp, | |
3148 | struct bgp_info *ri, | |
3149 | struct list *vrfs, int install) | |
3150 | { | |
3151 | char buf[PREFIX2STR_BUFFER]; | |
3152 | struct bgp *bgp_vrf; | |
3153 | struct listnode *node, *nnode; | |
3154 | ||
90264d64 | 3155 | /* Only type-2/type-5 routes go into a VRF */ |
996c9314 LB |
3156 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3157 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d3135ba3 | 3158 | return 0; |
3159 | ||
90264d64 | 3160 | /* if it is type-2 route and not a mac+ip route skip this route */ |
996c9314 | 3161 | if ((evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
3714a385 | 3162 | && !(is_evpn_prefix_ipaddr_v4(evp) |
3163 | || is_evpn_prefix_ipaddr_v6(evp))) | |
30a30f57 MK |
3164 | return 0; |
3165 | ||
d3135ba3 | 3166 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
3167 | int ret; | |
3168 | ||
3169 | if (install) | |
996c9314 | 3170 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, ri); |
d3135ba3 | 3171 | else |
996c9314 LB |
3172 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
3173 | ri); | |
d3135ba3 | 3174 | |
3175 | if (ret) { | |
3176 | zlog_err("%u: Failed to %s prefix %s in VRF %s", | |
3177 | bgp_def->vrf_id, | |
3178 | install ? "install" : "uninstall", | |
3179 | prefix2str(evp, buf, sizeof(buf)), | |
3180 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
3181 | return ret; | |
3182 | } | |
3183 | } | |
3184 | ||
3185 | return 0; | |
3186 | } | |
3187 | ||
128ea8ab | 3188 | /* |
3189 | * Install or uninstall route in matching VNIs (list). | |
3190 | */ | |
d62a17ae | 3191 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
3192 | safi_t safi, struct prefix_evpn *evp, | |
3193 | struct bgp_info *ri, | |
3194 | struct list *vnis, int install) | |
128ea8ab | 3195 | { |
d62a17ae | 3196 | struct bgpevpn *vpn; |
3197 | struct listnode *node, *nnode; | |
128ea8ab | 3198 | |
d62a17ae | 3199 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
3200 | int ret; | |
128ea8ab | 3201 | |
d62a17ae | 3202 | if (!is_vni_live(vpn)) |
3203 | continue; | |
128ea8ab | 3204 | |
d62a17ae | 3205 | if (install) |
3206 | ret = install_evpn_route_entry(bgp, vpn, evp, ri); | |
3207 | else | |
3208 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, ri); | |
128ea8ab | 3209 | |
d62a17ae | 3210 | if (ret) { |
3211 | zlog_err("%u: Failed to %s EVPN %s route in VNI %u", | |
3212 | bgp->vrf_id, install ? "install" : "uninstall", | |
3213 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
3214 | ? "MACIP" | |
3215 | : "IMET", | |
3216 | vpn->vni); | |
3217 | return ret; | |
3218 | } | |
3219 | } | |
128ea8ab | 3220 | |
d62a17ae | 3221 | return 0; |
128ea8ab | 3222 | } |
3223 | ||
3224 | /* | |
50f74cf1 | 3225 | * Install or uninstall route for appropriate VNIs/ESIs. |
128ea8ab | 3226 | */ |
d62a17ae | 3227 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, |
3228 | struct prefix *p, struct bgp_info *ri, | |
3229 | int import) | |
3230 | { | |
3231 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
3232 | struct attr *attr = ri->attr; | |
3233 | struct ecommunity *ecom; | |
3234 | int i; | |
3235 | ||
3236 | assert(attr); | |
3237 | ||
50f74cf1 | 3238 | /* Only type-2, type-3, type-4 and type-5 are supported currently */ |
d62a17ae | 3239 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
90264d64 | 3240 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE |
50f74cf1 | 3241 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
90264d64 | 3242 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) |
d62a17ae | 3243 | return 0; |
3244 | ||
3245 | /* If we don't have Route Target, nothing much to do. */ | |
3246 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3247 | return 0; | |
3248 | ||
3249 | ecom = attr->ecommunity; | |
3250 | if (!ecom || !ecom->size) | |
3251 | return -1; | |
3252 | ||
50f74cf1 | 3253 | /* An EVPN route belongs to a VNI or a VRF or an ESI based on the RTs |
3254 | * attached to the route */ | |
d62a17ae | 3255 | for (i = 0; i < ecom->size; i++) { |
d7c0a89a QY |
3256 | uint8_t *pnt; |
3257 | uint8_t type, sub_type; | |
d62a17ae | 3258 | struct ecommunity_val *eval; |
3259 | struct ecommunity_val eval_tmp; | |
996c9314 | 3260 | struct irt_node *irt; /* import rt for l2vni */ |
d3135ba3 | 3261 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ |
50f74cf1 | 3262 | struct evpnes *es; |
d62a17ae | 3263 | |
3264 | /* Only deal with RTs */ | |
3265 | pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); | |
3266 | eval = (struct ecommunity_val *)(ecom->val | |
3267 | + (i * ECOMMUNITY_SIZE)); | |
3268 | type = *pnt++; | |
3269 | sub_type = *pnt++; | |
3270 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3271 | continue; | |
3272 | ||
50f74cf1 | 3273 | /* |
3274 | * macip routes (type-2) are imported into VNI and VRF tables. | |
3275 | * IMET route is imported into VNI table. | |
3276 | * prefix routes are imported into VRF table. | |
523cafc4 | 3277 | */ |
50f74cf1 | 3278 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
3279 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
3280 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { | |
d62a17ae | 3281 | |
50f74cf1 | 3282 | irt = lookup_import_rt(bgp, eval); |
3283 | if (irt) | |
3284 | install_uninstall_route_in_vnis(bgp, afi, safi, | |
3285 | evp, ri, | |
3286 | irt->vnis, | |
3287 | import); | |
3288 | ||
3289 | vrf_irt = lookup_vrf_import_rt(eval); | |
3290 | if (vrf_irt) | |
3291 | install_uninstall_route_in_vrfs(bgp, afi, safi, | |
3292 | evp, ri, | |
3293 | vrf_irt->vrfs, | |
3294 | import); | |
3295 | ||
3296 | /* Also check for non-exact match. | |
3297 | * In this, we mask out the AS and | |
3298 | * only check on the local-admin sub-field. | |
3299 | * This is to facilitate using | |
3300 | * VNI as the RT for EBGP peering too. | |
3301 | */ | |
3302 | irt = NULL; | |
3303 | vrf_irt = NULL; | |
3304 | if (type == ECOMMUNITY_ENCODE_AS | |
3305 | || type == ECOMMUNITY_ENCODE_AS4 | |
3306 | || type == ECOMMUNITY_ENCODE_IP) { | |
3307 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
3308 | mask_ecom_global_admin(&eval_tmp, eval); | |
3309 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3310 | vrf_irt = lookup_vrf_import_rt(&eval_tmp); | |
3311 | } | |
3312 | ||
3313 | if (irt) | |
3314 | install_uninstall_route_in_vnis(bgp, afi, safi, | |
3315 | evp, ri, | |
3316 | irt->vnis, | |
3317 | import); | |
3318 | if (vrf_irt) | |
3319 | install_uninstall_route_in_vrfs(bgp, afi, safi, | |
3320 | evp, ri, | |
3321 | vrf_irt->vrfs, | |
3322 | import); | |
3323 | } | |
3324 | ||
3325 | /* es route is imported into the es table */ | |
3326 | if (evp->prefix.route_type == BGP_EVPN_ES_ROUTE) { | |
3327 | ||
3328 | /* we will match based on the entire esi to avoid | |
3329 | * imoort of an es route for esi2 into esi1 | |
3330 | */ | |
3331 | es = bgp_evpn_lookup_es(bgp, &evp->prefix.es_addr.esi); | |
3332 | if (es && is_es_local(es)) | |
3333 | install_uninstall_route_in_es(bgp, es, | |
3334 | afi, safi, | |
3335 | evp, ri, import); | |
d62a17ae | 3336 | } |
d62a17ae | 3337 | } |
3338 | ||
3339 | return 0; | |
128ea8ab | 3340 | } |
3341 | ||
2bb9eff4 DS |
3342 | /* |
3343 | * delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 | |
3344 | * routes | |
3345 | */ | |
80b140af MK |
3346 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) |
3347 | { | |
3348 | /* delete all ipv4 routes and withdraw from peers */ | |
fdf19f06 MK |
3349 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3350 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af MK |
3351 | |
3352 | /* delete all ipv6 routes and withdraw from peers */ | |
fdf19f06 MK |
3353 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3354 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3355 | } |
3356 | ||
2bb9eff4 DS |
3357 | /* |
3358 | * update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
3359 | * routes | |
3360 | */ | |
80b140af MK |
3361 | static void update_advertise_vrf_routes(struct bgp *bgp_vrf) |
3362 | { | |
3363 | /* update all ipv4 routes */ | |
fdf19f06 MK |
3364 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3365 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af MK |
3366 | |
3367 | /* update all ipv6 routes */ | |
fdf19f06 MK |
3368 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3369 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3370 | } |
3371 | ||
676f83b9 | 3372 | /* |
3373 | * update and advertise local routes for a VRF as type-5 routes. | |
3374 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
3375 | * done in the global route table using the routes which already exist in the | |
3376 | * VRF routing table | |
3377 | */ | |
80b140af | 3378 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3379 | { |
80b140af MK |
3380 | /* skip if the RD is configured */ |
3381 | if (is_vrf_rd_configured(bgp_vrf)) | |
3382 | return; | |
3383 | ||
3384 | /* derive the RD for the VRF based on new router-id */ | |
3385 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
3386 | ||
3387 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
3388 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 3389 | } |
3390 | ||
3391 | /* | |
3392 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
3393 | * This is invoked upon VRF RD change. The processing is done only from global | |
3394 | * table. | |
3395 | */ | |
80b140af | 3396 | static void withdraw_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3397 | { |
80b140af MK |
3398 | /* skip if the RD is configured */ |
3399 | if (is_vrf_rd_configured(bgp_vrf)) | |
3400 | return; | |
3401 | ||
3402 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
3403 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 3404 | } |
3405 | ||
90e60aa7 | 3406 | /* |
3407 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
3408 | * change. Note that the processing is done only on the global route table | |
3409 | * using routes that already exist in the per-VNI table. | |
3410 | */ | |
d62a17ae | 3411 | static int update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
3412 | { | |
3413 | struct prefix_evpn p; | |
3414 | struct bgp_node *rn, *global_rn; | |
3415 | struct bgp_info *ri, *global_ri; | |
3416 | struct attr *attr; | |
3417 | afi_t afi = AFI_L2VPN; | |
3418 | safi_t safi = SAFI_EVPN; | |
3419 | ||
3420 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
3421 | * attributes to create and advertise the type-3 route for this VNI | |
3422 | * in the global table. | |
3423 | */ | |
3424 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3425 | rn = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); | |
3426 | if (!rn) /* unexpected */ | |
3427 | return 0; | |
3428 | for (ri = rn->info; ri; ri = ri->next) | |
3429 | if (ri->peer == bgp->peer_self && ri->type == ZEBRA_ROUTE_BGP | |
3430 | && ri->sub_type == BGP_ROUTE_STATIC) | |
3431 | break; | |
3432 | if (!ri) /* unexpected */ | |
3433 | return 0; | |
3434 | attr = ri->attr; | |
3435 | ||
3436 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
3437 | (struct prefix *)&p, &vpn->prd); | |
1a98c087 MK |
3438 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, 1, 0, &ri, |
3439 | 0); | |
d62a17ae | 3440 | |
3441 | /* Schedule for processing and unlock node. */ | |
3442 | bgp_process(bgp, global_rn, afi, safi); | |
3443 | bgp_unlock_node(global_rn); | |
3444 | ||
3445 | /* Now, walk this VNI's route table and use the route and its attribute | |
3446 | * to create and schedule route in global table. | |
3447 | */ | |
3448 | for (rn = bgp_table_top(vpn->route_table); rn; | |
3449 | rn = bgp_route_next(rn)) { | |
3450 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
3451 | ||
3452 | /* Identify MAC-IP local routes. */ | |
3453 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
3454 | continue; | |
3455 | ||
3456 | for (ri = rn->info; ri; ri = ri->next) | |
3457 | if (ri->peer == bgp->peer_self | |
3458 | && ri->type == ZEBRA_ROUTE_BGP | |
3459 | && ri->sub_type == BGP_ROUTE_STATIC) | |
3460 | break; | |
3461 | if (!ri) | |
3462 | continue; | |
3463 | ||
3464 | /* Create route in global routing table using this route entry's | |
3465 | * attribute. | |
3466 | */ | |
3467 | attr = ri->attr; | |
3468 | global_rn = bgp_afi_node_get(bgp->rib[afi][safi], afi, safi, | |
3469 | (struct prefix *)evp, &vpn->prd); | |
3470 | assert(global_rn); | |
3471 | update_evpn_route_entry(bgp, vpn, afi, safi, global_rn, attr, 1, | |
1a98c087 | 3472 | 0, &global_ri, 0); |
d62a17ae | 3473 | |
3474 | /* Schedule for processing and unlock node. */ | |
3475 | bgp_process(bgp, global_rn, afi, safi); | |
3476 | bgp_unlock_node(global_rn); | |
3477 | } | |
3478 | ||
3479 | return 0; | |
90e60aa7 | 3480 | } |
3481 | ||
3482 | /* | |
3483 | * Delete (and withdraw) local routes for a VNI - only from the global | |
3484 | * table. Invoked upon router-id change. | |
3485 | */ | |
d62a17ae | 3486 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3487 | { |
d62a17ae | 3488 | int ret; |
3489 | struct prefix_evpn p; | |
3490 | struct bgp_node *global_rn; | |
3491 | struct bgp_info *ri; | |
3492 | afi_t afi = AFI_L2VPN; | |
3493 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 3494 | |
d62a17ae | 3495 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
3496 | * for this VNI - from the global table. | |
3497 | */ | |
3498 | ret = delete_global_type2_routes(bgp, vpn); | |
3499 | if (ret) | |
3500 | return ret; | |
90e60aa7 | 3501 | |
d62a17ae | 3502 | /* Remove type-3 route for this VNI from global table. */ |
3503 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3504 | global_rn = bgp_afi_node_lookup(bgp->rib[afi][safi], afi, safi, | |
3505 | (struct prefix *)&p, &vpn->prd); | |
3506 | if (global_rn) { | |
3507 | /* Delete route entry in the global EVPN table. */ | |
50f74cf1 | 3508 | delete_evpn_route_entry(bgp, afi, safi, global_rn, &ri); |
90e60aa7 | 3509 | |
d62a17ae | 3510 | /* Schedule for processing - withdraws to peers happen from |
3511 | * this table. | |
3512 | */ | |
3513 | if (ri) | |
3514 | bgp_process(bgp, global_rn, afi, safi); | |
3515 | bgp_unlock_node(global_rn); | |
3516 | } | |
90e60aa7 | 3517 | |
d62a17ae | 3518 | return 0; |
90e60aa7 | 3519 | } |
3520 | ||
2d48ee25 | 3521 | /* |
3522 | * Handle router-id change. Update and advertise local routes corresponding | |
3523 | * to this VNI from peers. Note that this is invoked after updating the | |
3524 | * router-id. The routes in the per-VNI table are used to create routes in | |
3525 | * the global table and schedule them. | |
3526 | */ | |
d62a17ae | 3527 | static void update_router_id_vni(struct hash_backet *backet, struct bgp *bgp) |
2d48ee25 | 3528 | { |
d62a17ae | 3529 | struct bgpevpn *vpn; |
2d48ee25 | 3530 | |
d62a17ae | 3531 | vpn = (struct bgpevpn *)backet->data; |
2d48ee25 | 3532 | |
d62a17ae | 3533 | if (!vpn) { |
3534 | zlog_warn("%s: VNI hash entry for VNI not found", __FUNCTION__); | |
3535 | return; | |
3536 | } | |
2d48ee25 | 3537 | |
d62a17ae | 3538 | /* Skip VNIs with configured RD. */ |
3539 | if (is_rd_configured(vpn)) | |
3540 | return; | |
2d48ee25 | 3541 | |
d62a17ae | 3542 | bgp_evpn_derive_auto_rd(bgp, vpn); |
3543 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 3544 | } |
3545 | ||
3546 | /* | |
3547 | * Handle router-id change. Delete and withdraw local routes corresponding | |
3548 | * to this VNI from peers. Note that this is invoked prior to updating | |
3549 | * the router-id and is done only on the global route table, the routes | |
3550 | * are needed in the per-VNI table to re-advertise with new router id. | |
3551 | */ | |
d62a17ae | 3552 | static void withdraw_router_id_vni(struct hash_backet *backet, struct bgp *bgp) |
2d48ee25 | 3553 | { |
d62a17ae | 3554 | struct bgpevpn *vpn; |
2d48ee25 | 3555 | |
d62a17ae | 3556 | vpn = (struct bgpevpn *)backet->data; |
2d48ee25 | 3557 | |
d62a17ae | 3558 | if (!vpn) { |
3559 | zlog_warn("%s: VNI hash entry for VNI not found", __FUNCTION__); | |
3560 | return; | |
3561 | } | |
2d48ee25 | 3562 | |
d62a17ae | 3563 | /* Skip VNIs with configured RD. */ |
3564 | if (is_rd_configured(vpn)) | |
3565 | return; | |
2d48ee25 | 3566 | |
d62a17ae | 3567 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 3568 | } |
3569 | ||
128ea8ab | 3570 | /* |
3571 | * Process received EVPN type-2 route (advertise or withdraw). | |
3572 | */ | |
d62a17ae | 3573 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3574 | struct attr *attr, uint8_t *pfx, int psize, |
3575 | uint32_t addpath_id) | |
d62a17ae | 3576 | { |
3577 | struct prefix_rd prd; | |
3578 | struct prefix_evpn p; | |
554cd77a | 3579 | struct bgp_route_evpn evpn; |
d7c0a89a QY |
3580 | uint8_t ipaddr_len; |
3581 | uint8_t macaddr_len; | |
b57ba6d2 | 3582 | mpls_label_t label[BGP_MAX_LABELS]; /* holds the VNI(s) as in packet */ |
d7c0a89a | 3583 | uint32_t num_labels = 0; |
554cd77a | 3584 | uint32_t eth_tag; |
d62a17ae | 3585 | int ret; |
3586 | ||
3587 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
3588 | * additional 3 bytes if there is a second label (VNI): | |
3589 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
3590 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
3591 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
3592 | */ | |
3593 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
3594 | && psize != 40 && psize != 52) { | |
3595 | zlog_err("%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", | |
3596 | peer->bgp->vrf_id, peer->host, psize); | |
3597 | return -1; | |
3598 | } | |
3599 | ||
554cd77a VB |
3600 | memset(&evpn, 0, sizeof(evpn)); |
3601 | ||
d62a17ae | 3602 | /* Make prefix_rd */ |
3603 | prd.family = AF_UNSPEC; | |
3604 | prd.prefixlen = 64; | |
3605 | memcpy(&prd.val, pfx, 8); | |
3606 | pfx += 8; | |
3607 | ||
3608 | /* Make EVPN prefix. */ | |
3609 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3610 | p.family = AF_EVPN; |
50f74cf1 | 3611 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3612 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; |
3613 | ||
554cd77a VB |
3614 | /* Copy Ethernet Seg Identifier */ |
3615 | memcpy(&evpn.eth_s_id.val, pfx, ESI_LEN); | |
3616 | pfx += ESI_LEN; | |
d62a17ae | 3617 | |
554cd77a VB |
3618 | /* Copy Ethernet Tag */ |
3619 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3620 | p.prefix.macip_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3621 | pfx += 4; |
3622 | ||
3623 | /* Get the MAC Addr len */ | |
3624 | macaddr_len = *pfx++; | |
3625 | ||
3626 | /* Get the MAC Addr */ | |
28328ea9 | 3627 | if (macaddr_len == (ETH_ALEN * 8)) { |
3714a385 | 3628 | memcpy(&p.prefix.macip_addr.mac.octet, pfx, ETH_ALEN); |
28328ea9 | 3629 | pfx += ETH_ALEN; |
d62a17ae | 3630 | } else { |
3631 | zlog_err( | |
3632 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", | |
3633 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
3634 | return -1; | |
3635 | } | |
3636 | ||
3637 | ||
3638 | /* Get the IP. */ | |
3639 | ipaddr_len = *pfx++; | |
3640 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN | |
3641 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
3642 | zlog_err( | |
3643 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", | |
3644 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3645 | return -1; | |
3646 | } | |
3647 | ||
3648 | if (ipaddr_len) { | |
3649 | ipaddr_len /= 8; /* Convert to bytes. */ | |
3714a385 | 3650 | p.prefix.macip_addr.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) |
d62a17ae | 3651 | ? IPADDR_V4 |
3652 | : IPADDR_V6; | |
3714a385 | 3653 | memcpy(&p.prefix.macip_addr.ip.ip.addr, pfx, ipaddr_len); |
d62a17ae | 3654 | } |
3655 | pfx += ipaddr_len; | |
3656 | ||
b57ba6d2 MK |
3657 | /* Get the VNI(s). Stored as bytes here. */ |
3658 | num_labels++; | |
3659 | memset(label, 0, sizeof(label)); | |
3660 | memcpy(&label[0], pfx, BGP_LABEL_BYTES); | |
1b817c78 | 3661 | pfx += BGP_LABEL_BYTES; |
b57ba6d2 MK |
3662 | psize -= (33 + ipaddr_len); |
3663 | /* Do we have a second VNI? */ | |
3664 | if (psize) { | |
3665 | num_labels++; | |
3666 | memcpy(&label[1], pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 3667 | /* |
3668 | * If in future, we are required to access additional fields, | |
996c9314 LB |
3669 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading |
3670 | * the next field | |
6b11bd8d | 3671 | */ |
b57ba6d2 | 3672 | } |
d62a17ae | 3673 | |
3674 | /* Process the route. */ | |
3675 | if (attr) | |
3676 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3677 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3678 | &prd, &label[0], num_labels, 0, &evpn); |
d62a17ae | 3679 | else |
3680 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3681 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3682 | &prd, &label[0], num_labels, &evpn); |
d62a17ae | 3683 | return ret; |
128ea8ab | 3684 | } |
3685 | ||
3686 | /* | |
3687 | * Process received EVPN type-3 route (advertise or withdraw). | |
3688 | */ | |
d62a17ae | 3689 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3690 | struct attr *attr, uint8_t *pfx, int psize, |
3691 | uint32_t addpath_id) | |
d62a17ae | 3692 | { |
3693 | struct prefix_rd prd; | |
3694 | struct prefix_evpn p; | |
d7c0a89a | 3695 | uint8_t ipaddr_len; |
554cd77a | 3696 | uint32_t eth_tag; |
d62a17ae | 3697 | int ret; |
3698 | ||
3699 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
3700 | * IP len (1) and IP (4 or 16). | |
3701 | */ | |
3702 | if (psize != 17 && psize != 29) { | |
3703 | zlog_err("%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", | |
3704 | peer->bgp->vrf_id, peer->host, psize); | |
3705 | return -1; | |
3706 | } | |
3707 | ||
7fd077aa | 3708 | /* If PMSI is present, log if it is anything other than IR. |
3709 | * Note: We just simply ignore the values as it is not clear if | |
3710 | * doing anything else is better. | |
3711 | */ | |
3712 | if (attr && | |
3713 | (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL))) { | |
3714 | if (attr->pmsi_tnl_type != PMSI_TNLTYPE_INGR_REPL) { | |
d0be47e8 | 3715 | zlog_warn("%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d", |
7fd077aa | 3716 | peer->bgp->vrf_id, peer->host, |
3717 | attr->pmsi_tnl_type); | |
3718 | } | |
3719 | } | |
3720 | ||
d62a17ae | 3721 | /* Make prefix_rd */ |
3722 | prd.family = AF_UNSPEC; | |
3723 | prd.prefixlen = 64; | |
3724 | memcpy(&prd.val, pfx, 8); | |
3725 | pfx += 8; | |
3726 | ||
3727 | /* Make EVPN prefix. */ | |
3728 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3729 | p.family = AF_EVPN; |
50f74cf1 | 3730 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3731 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; |
3732 | ||
554cd77a VB |
3733 | /* Copy Ethernet Tag */ |
3734 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3735 | p.prefix.imet_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3736 | pfx += 4; |
3737 | ||
3738 | /* Get the IP. */ | |
3739 | ipaddr_len = *pfx++; | |
3740 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3714a385 | 3741 | p.prefix.imet_addr.ip.ipa_type = IPADDR_V4; |
3742 | memcpy(&p.prefix.imet_addr.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
d62a17ae | 3743 | } else { |
3744 | zlog_err( | |
3745 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", | |
3746 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3747 | return -1; | |
3748 | } | |
3749 | ||
3750 | /* Process the route. */ | |
3751 | if (attr) | |
3752 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3753 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3754 | &prd, NULL, 0, 0, NULL); |
d62a17ae | 3755 | else |
3756 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3757 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3758 | &prd, NULL, 0, NULL); |
d62a17ae | 3759 | return ret; |
128ea8ab | 3760 | } |
3761 | ||
50f74cf1 | 3762 | /* |
3763 | * Process received EVPN type-4 route (advertise or withdraw). | |
3764 | */ | |
3765 | static int process_type4_route(struct peer *peer, afi_t afi, safi_t safi, | |
3766 | struct attr *attr, uint8_t *pfx, int psize, | |
3767 | uint32_t addpath_id) | |
3768 | { | |
3769 | int ret; | |
3770 | esi_t esi; | |
3771 | uint8_t ipaddr_len; | |
3772 | struct in_addr vtep_ip; | |
3773 | struct prefix_rd prd; | |
3774 | struct prefix_evpn p; | |
3775 | ||
3776 | /* Type-4 route should be either 23 or 35 bytes | |
3777 | * RD (8), ESI (10), ip-len (1), ip (4 or 16) | |
3778 | */ | |
3779 | if (psize != 23 && psize != 35) { | |
3780 | zlog_err("%u:%s - Rx EVPN Type-4 NLRI with invalid length %d", | |
3781 | peer->bgp->vrf_id, peer->host, psize); | |
3782 | return -1; | |
3783 | } | |
3784 | ||
3785 | /* Make prefix_rd */ | |
3786 | prd.family = AF_UNSPEC; | |
3787 | prd.prefixlen = 64; | |
3788 | memcpy(&prd.val, pfx, 8); | |
3789 | pfx += 8; | |
3790 | ||
3791 | /* get the ESI */ | |
3792 | memcpy(&esi, pfx, ESI_BYTES); | |
3793 | pfx += ESI_BYTES; | |
3794 | ||
3795 | ||
3796 | /* Get the IP. */ | |
3797 | ipaddr_len = *pfx++; | |
3798 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3799 | memcpy(&vtep_ip, pfx, IPV4_MAX_BYTELEN); | |
3800 | } else { | |
3801 | zlog_err( | |
3802 | "%u:%s - Rx EVPN Type-4 NLRI with unsupported IP address length %d", | |
3803 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3804 | return -1; | |
3805 | } | |
3806 | ||
3807 | build_evpn_type4_prefix(&p, &esi, vtep_ip); | |
3808 | /* Process the route. */ | |
3809 | if (attr) { | |
3810 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3811 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
3812 | &prd, NULL, 0, 0, NULL); | |
2bb9eff4 | 3813 | } else { |
50f74cf1 | 3814 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, |
3815 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
3816 | &prd, NULL, 0, NULL); | |
3817 | } | |
3818 | return ret; | |
3819 | } | |
3820 | ||
3821 | ||
128ea8ab | 3822 | /* |
3823 | * Process received EVPN type-5 route (advertise or withdraw). | |
3824 | */ | |
d62a17ae | 3825 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3826 | struct attr *attr, uint8_t *pfx, int psize, |
3827 | uint32_t addpath_id, int withdraw) | |
d62a17ae | 3828 | { |
3829 | struct prefix_rd prd; | |
3830 | struct prefix_evpn p; | |
3831 | struct bgp_route_evpn evpn; | |
d7c0a89a QY |
3832 | uint8_t ippfx_len; |
3833 | uint32_t eth_tag; | |
b57ba6d2 | 3834 | mpls_label_t label; /* holds the VNI as in the packet */ |
d62a17ae | 3835 | int ret; |
3836 | ||
3837 | /* Type-5 route should be 34 or 58 bytes: | |
3838 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
3839 | * GW (4 or 16) and VNI (3). | |
3840 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
3841 | */ | |
3842 | if (psize != 34 && psize != 58) { | |
3843 | zlog_err("%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", | |
3844 | peer->bgp->vrf_id, peer->host, psize); | |
3845 | return -1; | |
3846 | } | |
3847 | ||
3848 | /* Make prefix_rd */ | |
3849 | prd.family = AF_UNSPEC; | |
3850 | prd.prefixlen = 64; | |
3851 | memcpy(&prd.val, pfx, 8); | |
3852 | pfx += 8; | |
3853 | ||
3854 | /* Make EVPN prefix. */ | |
3855 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3856 | p.family = AF_EVPN; |
50f74cf1 | 3857 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3858 | p.prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE; |
3859 | ||
3860 | /* Additional information outside of prefix - ESI and GW IP */ | |
3861 | memset(&evpn, 0, sizeof(evpn)); | |
3862 | ||
3863 | /* Fetch ESI */ | |
3864 | memcpy(&evpn.eth_s_id.val, pfx, 10); | |
3865 | pfx += 10; | |
3866 | ||
3867 | /* Fetch Ethernet Tag. */ | |
3868 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3869 | p.prefix.prefix_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3870 | pfx += 4; |
3871 | ||
3872 | /* Fetch IP prefix length. */ | |
3873 | ippfx_len = *pfx++; | |
3874 | if (ippfx_len > IPV6_MAX_BITLEN) { | |
3875 | zlog_err( | |
3876 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", | |
3877 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
3878 | return -1; | |
3879 | } | |
3714a385 | 3880 | p.prefix.prefix_addr.ip_prefix_length = ippfx_len; |
d62a17ae | 3881 | |
3882 | /* Determine IPv4 or IPv6 prefix */ | |
3883 | /* Since the address and GW are from the same family, this just becomes | |
3884 | * a simple check on the total size. | |
3885 | */ | |
3886 | if (psize == 34) { | |
3714a385 | 3887 | SET_IPADDR_V4(&p.prefix.prefix_addr.ip); |
3888 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 3889 | pfx += 4; |
3890 | memcpy(&evpn.gw_ip.ipv4, pfx, 4); | |
3891 | pfx += 4; | |
d62a17ae | 3892 | } else { |
3714a385 | 3893 | SET_IPADDR_V6(&p.prefix.prefix_addr.ip); |
3894 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v6, pfx, 16); | |
d62a17ae | 3895 | pfx += 16; |
3896 | memcpy(&evpn.gw_ip.ipv6, pfx, 16); | |
3897 | pfx += 16; | |
d62a17ae | 3898 | } |
3899 | ||
b57ba6d2 MK |
3900 | /* Get the VNI (in MPLS label field). Stored as bytes here. */ |
3901 | memset(&label, 0, sizeof(label)); | |
3902 | memcpy(&label, pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 3903 | |
3904 | /* | |
3905 | * If in future, we are required to access additional fields, | |
996c9314 LB |
3906 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next |
3907 | * field | |
6b11bd8d | 3908 | */ |
d62a17ae | 3909 | |
3910 | /* Process the route. */ | |
3911 | if (!withdraw) | |
3912 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3913 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3914 | &prd, &label, 1, 0, &evpn); |
d62a17ae | 3915 | else |
3916 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3917 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3918 | &prd, &label, 1, &evpn); |
d62a17ae | 3919 | |
3920 | return ret; | |
3921 | } | |
3922 | ||
3923 | static void evpn_mpattr_encode_type5(struct stream *s, struct prefix *p, | |
996c9314 | 3924 | struct prefix_rd *prd, mpls_label_t *label, |
d7c0a89a | 3925 | uint32_t num_labels, struct attr *attr) |
d62a17ae | 3926 | { |
3927 | int len; | |
3928 | char temp[16]; | |
3929 | struct evpn_addr *p_evpn_p; | |
3930 | ||
3931 | memset(&temp, 0, 16); | |
b03b8898 | 3932 | if (p->family != AF_EVPN) |
d62a17ae | 3933 | return; |
3934 | p_evpn_p = &(p->u.prefix_evpn); | |
3935 | ||
e9fc2840 | 3936 | /* len denites the total len of IP and GW-IP in the route |
523cafc4 | 3937 | IP and GW-IP have to be both ipv4 or ipv6 |
3938 | */ | |
3714a385 | 3939 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
e9fc2840 | 3940 | len = 8; /* IP and GWIP are both ipv4 */ |
d62a17ae | 3941 | else |
e9fc2840 | 3942 | len = 32; /* IP and GWIP are both ipv6 */ |
d62a17ae | 3943 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
3944 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
3945 | stream_put(s, prd->val, 8); | |
0af35d90 | 3946 | if (attr) |
d62a17ae | 3947 | stream_put(s, &(attr->evpn_overlay.eth_s_id), 10); |
3948 | else | |
3949 | stream_put(s, &temp, 10); | |
3714a385 | 3950 | stream_putl(s, p_evpn_p->prefix_addr.eth_tag); |
3951 | stream_putc(s, p_evpn_p->prefix_addr.ip_prefix_length); | |
3952 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) | |
3953 | stream_put_ipv4(s, p_evpn_p->prefix_addr.ip.ipaddr_v4.s_addr); | |
d62a17ae | 3954 | else |
3714a385 | 3955 | stream_put(s, &p_evpn_p->prefix_addr.ip.ipaddr_v6, 16); |
0af35d90 | 3956 | if (attr) { |
3714a385 | 3957 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 3958 | stream_put_ipv4(s, |
3959 | attr->evpn_overlay.gw_ip.ipv4.s_addr); | |
3960 | else | |
3961 | stream_put(s, &(attr->evpn_overlay.gw_ip.ipv6), 16); | |
3962 | } else { | |
3714a385 | 3963 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 3964 | stream_put_ipv4(s, 0); |
3965 | else | |
3966 | stream_put(s, &temp, 16); | |
3967 | } | |
3968 | ||
b57ba6d2 | 3969 | if (num_labels) |
d62a17ae | 3970 | stream_put(s, label, 3); |
3971 | else | |
3972 | stream_put3(s, 0); | |
128ea8ab | 3973 | } |
3974 | ||
3975 | /* | |
3976 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
3977 | */ | |
d62a17ae | 3978 | static void cleanup_vni_on_disable(struct hash_backet *backet, struct bgp *bgp) |
128ea8ab | 3979 | { |
d62a17ae | 3980 | struct bgpevpn *vpn = (struct bgpevpn *)backet->data; |
128ea8ab | 3981 | |
d62a17ae | 3982 | /* Remove EVPN routes and schedule for processing. */ |
3983 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 3984 | |
d62a17ae | 3985 | /* Clear "live" flag and see if hash needs to be freed. */ |
3986 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
3987 | if (!is_vni_configured(vpn)) | |
3988 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 3989 | } |
3990 | ||
3991 | /* | |
3992 | * Free a VNI entry; iterator function called during cleanup. | |
3993 | */ | |
d62a17ae | 3994 | static void free_vni_entry(struct hash_backet *backet, struct bgp *bgp) |
128ea8ab | 3995 | { |
d62a17ae | 3996 | struct bgpevpn *vpn; |
128ea8ab | 3997 | |
d62a17ae | 3998 | vpn = (struct bgpevpn *)backet->data; |
3999 | delete_all_vni_routes(bgp, vpn); | |
4000 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4001 | } |
4002 | ||
c581d8b0 MK |
4003 | /* |
4004 | * Derive AUTO import RT for BGP VRF - L3VNI | |
4005 | */ | |
4006 | static void evpn_auto_rt_import_add_for_vrf(struct bgp *bgp_vrf) | |
4007 | { | |
10ebe1ab MK |
4008 | struct bgp *bgp_def = NULL; |
4009 | ||
c581d8b0 | 4010 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); |
10ebe1ab MK |
4011 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4012 | ||
4013 | /* Map RT to VRF */ | |
4014 | bgp_def = bgp_get_default(); | |
4015 | if (!bgp_def) | |
4016 | return; | |
4017 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
c581d8b0 MK |
4018 | } |
4019 | ||
4020 | /* | |
4021 | * Delete AUTO import RT from BGP VRF - L3VNI | |
4022 | */ | |
4023 | static void evpn_auto_rt_import_delete_for_vrf(struct bgp *bgp_vrf) | |
4024 | { | |
4025 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); | |
4026 | } | |
4027 | ||
4028 | /* | |
4029 | * Derive AUTO export RT for BGP VRF - L3VNI | |
4030 | */ | |
4031 | static void evpn_auto_rt_export_add_for_vrf(struct bgp *bgp_vrf) | |
4032 | { | |
4033 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4034 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4035 | } | |
4036 | ||
4037 | /* | |
4038 | * Delete AUTO export RT from BGP VRF - L3VNI | |
4039 | */ | |
4040 | static void evpn_auto_rt_export_delete_for_vrf(struct bgp *bgp_vrf) | |
4041 | { | |
4042 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4043 | } | |
128ea8ab | 4044 | |
f1f8b53c MK |
4045 | static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp *bgp_vrf) |
4046 | { | |
4047 | struct bgp *bgp_def = NULL; | |
4048 | struct listnode *node = NULL; | |
4049 | struct bgpevpn *vpn = NULL; | |
4050 | ||
4051 | bgp_def = bgp_get_default(); | |
4052 | if (!bgp_def) | |
4053 | return; | |
4054 | ||
4992b4ae MK |
4055 | /* update all type-5 routes */ |
4056 | update_advertise_vrf_routes(bgp_vrf); | |
4057 | ||
4058 | /* update all type-2 routes */ | |
f1f8b53c MK |
4059 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) |
4060 | update_routes_for_vni(bgp_def, vpn); | |
4061 | } | |
4062 | ||
bf1061d8 VB |
4063 | /* |
4064 | * Handle autort change for a given VNI. | |
4065 | */ | |
4066 | static void update_autort_vni(struct hash_backet *backet, struct bgp *bgp) | |
4067 | { | |
4068 | struct bgpevpn *vpn = backet->data; | |
bf1061d8 VB |
4069 | |
4070 | if (!vpn) { | |
4071 | zlog_warn("%s: VNI hash entry for VNI not found", __PRETTY_FUNCTION__); | |
4072 | return; | |
4073 | } | |
4074 | ||
4075 | if (!is_import_rt_configured(vpn)) { | |
4076 | if (is_vni_live(vpn)) | |
4077 | bgp_evpn_uninstall_routes(bgp, vpn); | |
4078 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
bf1061d8 VB |
4079 | list_delete_all_node(vpn->import_rtl); |
4080 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
4081 | if (is_vni_live(vpn)) | |
4082 | bgp_evpn_install_routes(bgp, vpn); | |
4083 | } | |
4084 | if (!is_export_rt_configured(vpn)) { | |
bf1061d8 VB |
4085 | list_delete_all_node(vpn->export_rtl); |
4086 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
4087 | if (is_vni_live(vpn)) | |
4088 | bgp_evpn_handle_export_rt_change(bgp, vpn); | |
4089 | } | |
4090 | } | |
4091 | ||
128ea8ab | 4092 | /* |
4093 | * Public functions. | |
4094 | */ | |
4095 | ||
5424b7ba | 4096 | /* withdraw type-5 route corresponding to ip prefix */ |
31310b25 | 4097 | void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, struct prefix *p, |
5424b7ba MK |
4098 | afi_t afi, safi_t safi) |
4099 | { | |
4100 | int ret = 0; | |
4101 | struct prefix_evpn evp; | |
4102 | char buf[PREFIX_STRLEN]; | |
4103 | ||
31310b25 | 4104 | build_type5_prefix_from_ip_prefix(&evp, p); |
5424b7ba MK |
4105 | ret = delete_evpn_type5_route(bgp_vrf, &evp); |
4106 | if (ret) { | |
4107 | zlog_err( | |
996c9314 LB |
4108 | "%u failed to delete type-5 route for prefix %s in vrf %s", |
4109 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf)), | |
4110 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
5424b7ba MK |
4111 | } |
4112 | } | |
4113 | ||
342dd0c6 | 4114 | /* withdraw all type-5 routes for an address family */ |
996c9314 | 4115 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi, safi_t safi) |
342dd0c6 | 4116 | { |
4117 | struct bgp_table *table = NULL; | |
4118 | struct bgp_node *rn = NULL; | |
25f2ca53 | 4119 | struct bgp_info *ri; |
342dd0c6 | 4120 | |
053905d2 | 4121 | table = bgp_vrf->rib[afi][safi]; |
25f2ca53 | 4122 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
4123 | /* Only care about "selected" routes - non-imported. */ | |
4124 | /* TODO: Support for AddPath for EVPN. */ | |
4125 | for (ri = rn->info; ri; ri = ri->next) { | |
996c9314 LB |
4126 | if (CHECK_FLAG(ri->flags, BGP_INFO_SELECTED) |
4127 | && (!ri->extra || !ri->extra->parent)) { | |
25f2ca53 | 4128 | bgp_evpn_withdraw_type5_route(bgp_vrf, &rn->p, |
4129 | afi, safi); | |
4130 | break; | |
4131 | } | |
4132 | } | |
4133 | } | |
5424b7ba | 4134 | } |
342dd0c6 | 4135 | |
2f69f6d3 | 4136 | /* |
4137 | * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed | |
4138 | * to this function correspond to those of the source IP prefix (best | |
4139 | * path in the case of the attr. In the case of a local prefix (when we | |
4140 | * are advertising local subnets), the src_attr will be NULL. | |
4141 | */ | |
31310b25 | 4142 | void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf, struct prefix *p, |
996c9314 LB |
4143 | struct attr *src_attr, afi_t afi, |
4144 | safi_t safi) | |
5424b7ba MK |
4145 | { |
4146 | int ret = 0; | |
4147 | struct prefix_evpn evp; | |
4148 | char buf[PREFIX_STRLEN]; | |
7c82b312 | 4149 | |
31310b25 | 4150 | build_type5_prefix_from_ip_prefix(&evp, p); |
2f69f6d3 | 4151 | ret = update_evpn_type5_route(bgp_vrf, &evp, src_attr); |
4152 | if (ret) | |
996c9314 LB |
4153 | zlog_err("%u: Failed to create type-5 route for prefix %s", |
4154 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf))); | |
342dd0c6 | 4155 | } |
4156 | ||
2f69f6d3 | 4157 | /* Inject all prefixes of a particular address-family (currently, IPv4 or |
4158 | * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the | |
4159 | * advertisement is enabled. | |
4160 | */ | |
996c9314 LB |
4161 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi, |
4162 | safi_t safi) | |
342dd0c6 | 4163 | { |
4164 | struct bgp_table *table = NULL; | |
4165 | struct bgp_node *rn = NULL; | |
2f69f6d3 | 4166 | struct bgp_info *ri; |
342dd0c6 | 4167 | |
053905d2 | 4168 | table = bgp_vrf->rib[afi][safi]; |
31310b25 | 4169 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { |
2f69f6d3 | 4170 | /* Need to identify the "selected" route entry to use its |
25f2ca53 | 4171 | * attribute. Also, we only consider "non-imported" routes. |
2f69f6d3 | 4172 | * TODO: Support for AddPath for EVPN. |
4173 | */ | |
4174 | for (ri = rn->info; ri; ri = ri->next) { | |
996c9314 LB |
4175 | if (CHECK_FLAG(ri->flags, BGP_INFO_SELECTED) |
4176 | && (!ri->extra || !ri->extra->parent)) { | |
53c84f78 MK |
4177 | |
4178 | /* apply the route-map */ | |
4179 | if (bgp_vrf->adv_cmd_rmap[afi][safi].map) { | |
4180 | int ret = 0; | |
4181 | ||
996c9314 LB |
4182 | ret = route_map_apply( |
4183 | bgp_vrf->adv_cmd_rmap[afi][safi] | |
4184 | .map, | |
4185 | &rn->p, RMAP_BGP, ri); | |
53c84f78 MK |
4186 | if (ret == RMAP_DENYMATCH) |
4187 | continue; | |
4188 | } | |
996c9314 LB |
4189 | bgp_evpn_advertise_type5_route( |
4190 | bgp_vrf, &rn->p, ri->attr, afi, safi); | |
2f69f6d3 | 4191 | break; |
4192 | } | |
4193 | } | |
31310b25 | 4194 | } |
342dd0c6 | 4195 | } |
4196 | ||
996c9314 | 4197 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl) |
c581d8b0 MK |
4198 | { |
4199 | struct listnode *node, *nnode, *node_to_del; | |
4200 | struct ecommunity *ecom, *ecom_auto; | |
4201 | struct ecommunity_val eval; | |
4202 | ||
bf1061d8 VB |
4203 | if (bgp->advertise_autort_rfc8365) |
4204 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 MK |
4205 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
4206 | ||
4207 | ecom_auto = ecommunity_new(); | |
4208 | ecommunity_add_val(ecom_auto, &eval); | |
4209 | node_to_del = NULL; | |
4210 | ||
4211 | for (ALL_LIST_ELEMENTS(rtl, node, nnode, ecom)) { | |
4212 | if (ecommunity_match(ecom, ecom_auto)) { | |
4213 | ecommunity_free(&ecom); | |
4214 | node_to_del = node; | |
4215 | } | |
4216 | } | |
4217 | ||
4218 | if (node_to_del) | |
4219 | list_delete_node(rtl, node_to_del); | |
4220 | ||
4221 | ecommunity_free(&ecom_auto); | |
4222 | } | |
4223 | ||
4224 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
10ebe1ab | 4225 | struct ecommunity *ecomadd) |
c581d8b0 | 4226 | { |
5ba238b7 MK |
4227 | /* uninstall routes from vrf */ |
4228 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4229 | |
4230 | /* Cleanup the RT to VRF mapping */ | |
4231 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4232 | ||
c581d8b0 MK |
4233 | /* Remove auto generated RT */ |
4234 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
4235 | ||
4236 | /* Add the newly configured RT to RT list */ | |
4237 | listnode_add_sort(bgp_vrf->vrf_import_rtl, ecomadd); | |
4238 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
4239 | ||
10ebe1ab MK |
4240 | /* map VRF to its RTs */ |
4241 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4242 | ||
5ba238b7 MK |
4243 | /* install routes matching the new VRF */ |
4244 | install_routes_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4245 | } |
4246 | ||
4247 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
4248 | struct ecommunity *ecomdel) | |
4249 | { | |
4250 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4251 | struct ecommunity *ecom = NULL; | |
4252 | ||
5ba238b7 MK |
4253 | /* uninstall routes from vrf */ |
4254 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4255 | |
4256 | /* Cleanup the RT to VRF mapping */ | |
4257 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4258 | ||
c581d8b0 MK |
4259 | /* remove the RT from the RT list */ |
4260 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4261 | if (ecommunity_match(ecom, ecomdel)) { | |
4262 | ecommunity_free(&ecom); | |
4263 | node_to_del = node; | |
4264 | break; | |
4265 | } | |
4266 | } | |
4267 | ||
4268 | if (node_to_del) | |
4269 | list_delete_node(bgp_vrf->vrf_import_rtl, node_to_del); | |
4270 | ||
b3a4db3d | 4271 | assert(bgp_vrf->vrf_import_rtl); |
c581d8b0 | 4272 | /* fallback to auto import rt, if this was the last RT */ |
1230a82d | 4273 | if (bgp_vrf->vrf_import_rtl && list_isempty(bgp_vrf->vrf_import_rtl)) { |
c581d8b0 MK |
4274 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4275 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
4276 | } | |
4277 | ||
10ebe1ab MK |
4278 | /* map VRFs to its RTs */ |
4279 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4280 | ||
5ba238b7 MK |
4281 | /* install routes matching this new RT */ |
4282 | install_routes_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4283 | } |
4284 | ||
4285 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4286 | struct ecommunity *ecomadd) | |
4287 | { | |
4288 | /* remove auto-generated RT */ | |
4289 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
4290 | ||
4291 | /* Add the new RT to the RT list */ | |
4292 | listnode_add_sort(bgp_vrf->vrf_export_rtl, ecomadd); | |
4293 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4294 | ||
f1f8b53c | 4295 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
4296 | } |
4297 | ||
4298 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4299 | struct ecommunity *ecomdel) | |
4300 | { | |
4301 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4302 | struct ecommunity *ecom = NULL; | |
4303 | ||
4304 | /* Remove the RT from the RT list */ | |
4305 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_export_rtl, node, nnode, ecom)) { | |
4306 | if (ecommunity_match(ecom, ecomdel)) { | |
4307 | ecommunity_free(&ecom); | |
4308 | node_to_del = node; | |
4309 | break; | |
4310 | } | |
4311 | } | |
4312 | ||
4313 | if (node_to_del) | |
4314 | list_delete_node(bgp_vrf->vrf_export_rtl, node_to_del); | |
4315 | ||
1525e99f DS |
4316 | /* |
4317 | * Temporary assert to make SA happy. | |
4318 | * The ALL_LIST_ELEMENTS macro above has a NULL check | |
4319 | * which means that SA is going to complain about | |
4320 | * the list_isempty call, which doesn't NULL check. | |
4321 | * So until we get this situation cleaned up, here | |
4322 | * we are. | |
4323 | */ | |
4324 | assert(bgp_vrf->vrf_export_rtl); | |
4325 | ||
c581d8b0 | 4326 | /* fall back to auto-generated RT if this was the last RT */ |
1525e99f | 4327 | if (list_isempty(bgp_vrf->vrf_export_rtl)) { |
c581d8b0 MK |
4328 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
4329 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
4330 | } | |
4331 | ||
f1f8b53c | 4332 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); |
c581d8b0 MK |
4333 | } |
4334 | ||
2d48ee25 | 4335 | /* |
4336 | * Handle change to BGP router id. This is invoked twice by the change | |
4337 | * handler, first before the router id has been changed and then after | |
4338 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 4339 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 4340 | * will result in the routes being re-advertised. |
4341 | */ | |
d62a17ae | 4342 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 4343 | { |
676f83b9 | 4344 | if (withdraw) { |
4345 | ||
4346 | /* delete and withdraw all the type-5 routes | |
523cafc4 | 4347 | stored in the global table for this vrf |
4348 | */ | |
80b140af | 4349 | withdraw_router_id_vrf(bgp); |
676f83b9 | 4350 | |
4351 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
523cafc4 | 4352 | * L2-VNIs |
4353 | */ | |
d62a17ae | 4354 | hash_iterate(bgp->vnihash, |
4355 | (void (*)(struct hash_backet *, | |
4356 | void *))withdraw_router_id_vni, | |
4357 | bgp); | |
676f83b9 | 4358 | } else { |
4359 | ||
4360 | /* advertise all routes in the vrf as type-5 routes with the new | |
523cafc4 | 4361 | * RD |
4362 | */ | |
80b140af | 4363 | update_router_id_vrf(bgp); |
676f83b9 | 4364 | |
4365 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
523cafc4 | 4366 | * new RD |
4367 | */ | |
d62a17ae | 4368 | hash_iterate(bgp->vnihash, |
4369 | (void (*)(struct hash_backet *, | |
4370 | void *))update_router_id_vni, | |
4371 | bgp); | |
676f83b9 | 4372 | } |
2d48ee25 | 4373 | } |
4374 | ||
bf1061d8 VB |
4375 | /* |
4376 | * Handle change to auto-RT algorithm - update and advertise local routes. | |
4377 | */ | |
4378 | void bgp_evpn_handle_autort_change(struct bgp *bgp) | |
4379 | { | |
4380 | hash_iterate(bgp->vnihash, | |
4381 | (void (*)(struct hash_backet *, | |
4382 | void*))update_autort_vni, | |
4383 | bgp); | |
4384 | } | |
4385 | ||
90e60aa7 | 4386 | /* |
4387 | * Handle change to export RT - update and advertise local routes. | |
4388 | */ | |
d62a17ae | 4389 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4390 | { |
d62a17ae | 4391 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 4392 | } |
4393 | ||
996c9314 | 4394 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw) |
676f83b9 | 4395 | { |
4396 | if (withdraw) | |
4397 | delete_withdraw_vrf_routes(bgp_vrf); | |
4398 | else | |
4399 | update_advertise_vrf_routes(bgp_vrf); | |
4400 | } | |
4401 | ||
90e60aa7 | 4402 | /* |
4403 | * Handle change to RD. This is invoked twice by the change handler, | |
4404 | * first before the RD has been changed and then after the RD has | |
4405 | * been changed. The first invocation will result in local routes | |
4406 | * of this VNI being deleted and withdrawn and the next will result | |
4407 | * in the routes being re-advertised. | |
4408 | */ | |
d62a17ae | 4409 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
4410 | int withdraw) | |
90e60aa7 | 4411 | { |
d62a17ae | 4412 | if (withdraw) |
4413 | delete_withdraw_vni_routes(bgp, vpn); | |
4414 | else | |
4415 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 4416 | } |
4417 | ||
4418 | /* | |
4419 | * Install routes for this VNI. Invoked upon change to Import RT. | |
4420 | */ | |
d62a17ae | 4421 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4422 | { |
d62a17ae | 4423 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 4424 | } |
4425 | ||
4426 | /* | |
4427 | * Uninstall all routes installed for this VNI. Invoked upon change | |
4428 | * to Import RT. | |
4429 | */ | |
d62a17ae | 4430 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4431 | { |
d62a17ae | 4432 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 4433 | } |
4434 | ||
b16031a2 | 4435 | /* |
b57ba6d2 | 4436 | * TODO: Hardcoded for a maximum of 2 VNIs right now |
b16031a2 | 4437 | */ |
d7c0a89a | 4438 | char *bgp_evpn_label2str(mpls_label_t *label, uint32_t num_labels, char *buf, |
996c9314 | 4439 | int len) |
b16031a2 | 4440 | { |
b57ba6d2 | 4441 | vni_t vni1, vni2; |
b16031a2 | 4442 | |
b57ba6d2 MK |
4443 | vni1 = label2vni(label); |
4444 | if (num_labels == 2) { | |
996c9314 | 4445 | vni2 = label2vni(label + 1); |
b57ba6d2 MK |
4446 | snprintf(buf, len, "%u/%u", vni1, vni2); |
4447 | } else | |
4448 | snprintf(buf, len, "%u", vni1); | |
d62a17ae | 4449 | return buf; |
b16031a2 | 4450 | } |
4451 | ||
9c92b5f7 MK |
4452 | /* |
4453 | * Function to convert evpn route to json format. | |
4454 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4455 | */ | |
57f7feb6 | 4456 | void bgp_evpn_route2json(struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 4457 | { |
b682f6de | 4458 | char buf1[ETHER_ADDR_STRLEN]; |
4459 | char buf2[PREFIX2STR_BUFFER]; | |
9c92b5f7 | 4460 | |
b682f6de | 4461 | if (!json) |
4462 | return; | |
9c92b5f7 | 4463 | |
dff8f48d | 4464 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
b682f6de | 4465 | json_object_int_add(json, "routeType", p->prefix.route_type); |
3714a385 | 4466 | json_object_int_add(json, "ethTag", |
4467 | p->prefix.imet_addr.eth_tag); | |
57f7feb6 | 4468 | json_object_int_add(json, "ipLen", |
3714a385 | 4469 | is_evpn_prefix_ipaddr_v4(p) |
57f7feb6 MK |
4470 | ? IPV4_MAX_BITLEN |
4471 | : IPV6_MAX_BITLEN); | |
b682f6de | 4472 | json_object_string_add(json, "ip", |
3714a385 | 4473 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
57f7feb6 | 4474 | } else if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3714a385 | 4475 | if (is_evpn_prefix_ipaddr_none(p)) { |
57f7feb6 MK |
4476 | json_object_int_add(json, "routeType", |
4477 | p->prefix.route_type); | |
3714a385 | 4478 | json_object_int_add(json, "ethTag", |
4479 | p->prefix.macip_addr.eth_tag); | |
57f7feb6 MK |
4480 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); |
4481 | json_object_string_add(json, "mac", | |
3714a385 | 4482 | prefix_mac2str(&p->prefix.macip_addr.mac, |
57f7feb6 MK |
4483 | buf1, |
4484 | sizeof(buf1))); | |
dff8f48d | 4485 | } else { |
d7c0a89a | 4486 | uint8_t family; |
dff8f48d | 4487 | |
3714a385 | 4488 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET |
57f7feb6 | 4489 | : AF_INET6; |
dff8f48d | 4490 | |
b682f6de | 4491 | json_object_int_add(json, "routeType", |
57f7feb6 | 4492 | p->prefix.route_type); |
3714a385 | 4493 | json_object_int_add(json, "ethTag", |
4494 | p->prefix.macip_addr.eth_tag); | |
57f7feb6 | 4495 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); |
b682f6de | 4496 | json_object_string_add(json, "mac", |
3714a385 | 4497 | prefix_mac2str(&p->prefix.macip_addr.mac, |
57f7feb6 MK |
4498 | buf1, |
4499 | sizeof(buf1))); | |
b682f6de | 4500 | json_object_int_add(json, "ipLen", |
3714a385 | 4501 | is_evpn_prefix_ipaddr_v4(p) |
57f7feb6 MK |
4502 | ? IPV4_MAX_BITLEN |
4503 | : IPV6_MAX_BITLEN); | |
4504 | json_object_string_add( | |
4505 | json, "ip", | |
3714a385 | 4506 | inet_ntop(family, |
4507 | &p->prefix.macip_addr.ip.ip.addr, | |
4508 | buf2, | |
57f7feb6 | 4509 | PREFIX2STR_BUFFER)); |
dff8f48d MK |
4510 | } |
4511 | } else { | |
4512 | /* Currently, this is to cater to other AF_ETHERNET code. */ | |
4513 | } | |
9c92b5f7 MK |
4514 | } |
4515 | ||
520d5d76 | 4516 | /* |
4517 | * Function to convert evpn route to string. | |
4518 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4519 | */ | |
d62a17ae | 4520 | char *bgp_evpn_route2str(struct prefix_evpn *p, char *buf, int len) |
4521 | { | |
4522 | char buf1[ETHER_ADDR_STRLEN]; | |
4523 | char buf2[PREFIX2STR_BUFFER]; | |
50f74cf1 | 4524 | char buf3[ESI_STR_LEN]; |
d62a17ae | 4525 | |
4526 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { | |
554cd77a | 4527 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", p->prefix.route_type, |
3714a385 | 4528 | p->prefix.imet_addr.eth_tag, |
4529 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
d62a17ae | 4530 | : IPV6_MAX_BITLEN, |
3714a385 | 4531 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
d62a17ae | 4532 | } else if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3714a385 | 4533 | if (is_evpn_prefix_ipaddr_none(p)) |
554cd77a VB |
4534 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
4535 | p->prefix.route_type, | |
3714a385 | 4536 | p->prefix.macip_addr.eth_tag, |
554cd77a | 4537 | 8 * ETH_ALEN, |
3714a385 | 4538 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 4539 | sizeof(buf1))); |
4540 | else { | |
d7c0a89a | 4541 | uint8_t family; |
d62a17ae | 4542 | |
3714a385 | 4543 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET |
d62a17ae | 4544 | : AF_INET6; |
554cd77a VB |
4545 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]:[%d]:[%s]", |
4546 | p->prefix.route_type, | |
3714a385 | 4547 | p->prefix.macip_addr.eth_tag, |
554cd77a | 4548 | 8 * ETH_ALEN, |
3714a385 | 4549 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, |
d62a17ae | 4550 | sizeof(buf1)), |
4551 | family == AF_INET ? IPV4_MAX_BITLEN | |
4552 | : IPV6_MAX_BITLEN, | |
3714a385 | 4553 | inet_ntop(family, |
4554 | &p->prefix.macip_addr.ip.ip.addr, | |
4555 | buf2, | |
d62a17ae | 4556 | PREFIX2STR_BUFFER)); |
4557 | } | |
342dd0c6 | 4558 | } else if (p->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
554cd77a VB |
4559 | snprintf(buf, len, "[%d]:[%d]:[%d]:[%s]", |
4560 | p->prefix.route_type, | |
3714a385 | 4561 | p->prefix.prefix_addr.eth_tag, |
4562 | p->prefix.prefix_addr.ip_prefix_length, | |
4563 | is_evpn_prefix_ipaddr_v4(p) | |
4564 | ? inet_ntoa(p->prefix.prefix_addr.ip.ipaddr_v4) | |
4565 | : inet6_ntoa(p->prefix.prefix_addr.ip.ipaddr_v6)); | |
50f74cf1 | 4566 | } else if (p->prefix.route_type == BGP_EVPN_ES_ROUTE) { |
4567 | snprintf(buf, len, "[%d]:[%s]:[%d]:[%s]", | |
4568 | p->prefix.route_type, | |
4569 | esi_to_str(&p->prefix.es_addr.esi, buf3, sizeof(buf3)), | |
4570 | is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BITLEN | |
4571 | : IPV6_MAX_BITLEN, | |
4572 | inet_ntoa(p->prefix.es_addr.ip.ipaddr_v4)); | |
d62a17ae | 4573 | } else { |
b03b8898 | 4574 | /* For EVPN route types not supported yet. */ |
f9aa3e55 QY |
4575 | snprintf(buf, len, "(unsupported route type %d)", |
4576 | p->prefix.route_type); | |
d62a17ae | 4577 | } |
4578 | ||
4579 | return (buf); | |
520d5d76 | 4580 | } |
4581 | ||
128ea8ab | 4582 | /* |
4583 | * Encode EVPN prefix in Update (MP_REACH) | |
4584 | */ | |
d62a17ae | 4585 | void bgp_evpn_encode_prefix(struct stream *s, struct prefix *p, |
996c9314 | 4586 | struct prefix_rd *prd, mpls_label_t *label, |
d7c0a89a QY |
4587 | uint32_t num_labels, struct attr *attr, |
4588 | int addpath_encode, uint32_t addpath_tx_id) | |
d62a17ae | 4589 | { |
4590 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
b57ba6d2 | 4591 | int len, ipa_len = 0; |
d62a17ae | 4592 | |
4593 | if (addpath_encode) | |
4594 | stream_putl(s, addpath_tx_id); | |
4595 | ||
4596 | /* Route type */ | |
4597 | stream_putc(s, evp->prefix.route_type); | |
4598 | ||
4599 | switch (evp->prefix.route_type) { | |
4600 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4601 | if (is_evpn_prefix_ipaddr_v4(evp)) |
d62a17ae | 4602 | ipa_len = IPV4_MAX_BYTELEN; |
3714a385 | 4603 | else if (is_evpn_prefix_ipaddr_v6(evp)) |
d62a17ae | 4604 | ipa_len = IPV6_MAX_BYTELEN; |
b57ba6d2 MK |
4605 | /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */ |
4606 | len = 8 + 10 + 4 + 1 + 6 + 1 + ipa_len + 3; | |
4607 | if (ipa_len && num_labels > 1) /* There are 2 VNIs */ | |
4608 | len += 3; | |
4609 | stream_putc(s, len); | |
996c9314 | 4610 | stream_put(s, prd->val, 8); /* RD */ |
554cd77a VB |
4611 | if (attr) |
4612 | stream_put(s, &attr->evpn_overlay.eth_s_id, ESI_LEN); | |
4613 | else | |
4614 | stream_put(s, 0, 10); | |
3714a385 | 4615 | stream_putl(s, evp->prefix.macip_addr.eth_tag); /* Ethernet Tag ID */ |
28328ea9 | 4616 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
3714a385 | 4617 | stream_put(s, evp->prefix.macip_addr.mac.octet, 6); /* Mac Addr */ |
4618 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
4619 | if (ipa_len) /* IP */ | |
4620 | stream_put(s, &evp->prefix.macip_addr.ip.ip.addr, | |
4621 | ipa_len); | |
b57ba6d2 MK |
4622 | /* 1st label is the L2 VNI */ |
4623 | stream_put(s, label, BGP_LABEL_BYTES); | |
4624 | /* Include 2nd label (L3 VNI) if advertising MAC+IP */ | |
4625 | if (ipa_len && num_labels > 1) | |
996c9314 | 4626 | stream_put(s, label + 1, BGP_LABEL_BYTES); |
d62a17ae | 4627 | break; |
4628 | ||
4629 | case BGP_EVPN_IMET_ROUTE: | |
4630 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
4631 | stream_put(s, prd->val, 8); /* RD */ | |
3714a385 | 4632 | stream_putl(s, evp->prefix.imet_addr.eth_tag); /* Ethernet Tag ID */ |
d62a17ae | 4633 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ |
4634 | /* Originating Router's IP Addr */ | |
3714a385 | 4635 | stream_put_in_addr(s, &evp->prefix.imet_addr.ip.ipaddr_v4); |
d62a17ae | 4636 | break; |
4637 | ||
50f74cf1 | 4638 | case BGP_EVPN_ES_ROUTE: |
4639 | stream_putc(s, 23); /* TODO: length: assumes ipv4 VTEP */ | |
4640 | stream_put(s, prd->val, 8); /* RD */ | |
4641 | stream_put(s, evp->prefix.es_addr.esi.val, 10); /* ESI */ | |
4642 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ | |
2bb9eff4 DS |
4643 | /* VTEP IP */ |
4644 | stream_put_in_addr(s, &evp->prefix.es_addr.ip.ipaddr_v4); | |
50f74cf1 | 4645 | break; |
4646 | ||
d62a17ae | 4647 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4648 | /* TODO: AddPath support. */ | |
b57ba6d2 | 4649 | evpn_mpattr_encode_type5(s, p, prd, label, num_labels, attr); |
d62a17ae | 4650 | break; |
4651 | ||
4652 | default: | |
4653 | break; | |
4654 | } | |
4655 | } | |
4656 | ||
4657 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
4658 | struct bgp_nlri *packet, int withdraw) | |
4659 | { | |
d7c0a89a QY |
4660 | uint8_t *pnt; |
4661 | uint8_t *lim; | |
d62a17ae | 4662 | afi_t afi; |
4663 | safi_t safi; | |
d7c0a89a | 4664 | uint32_t addpath_id; |
d62a17ae | 4665 | int addpath_encoded; |
4666 | int psize = 0; | |
d7c0a89a | 4667 | uint8_t rtype; |
d62a17ae | 4668 | struct prefix p; |
4669 | ||
d62a17ae | 4670 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ |
4671 | pnt = packet->nlri; | |
4672 | lim = pnt + packet->length; | |
4673 | afi = packet->afi; | |
4674 | safi = packet->safi; | |
4675 | addpath_id = 0; | |
4676 | ||
4677 | addpath_encoded = | |
4678 | (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ADDPATH_AF_RX_ADV) | |
4679 | && CHECK_FLAG(peer->af_cap[afi][safi], | |
4680 | PEER_CAP_ADDPATH_AF_TX_RCV)); | |
4681 | ||
4682 | for (; pnt < lim; pnt += psize) { | |
4683 | /* Clear prefix structure. */ | |
4684 | memset(&p, 0, sizeof(struct prefix)); | |
4685 | ||
4686 | /* Deal with path-id if AddPath is supported. */ | |
4687 | if (addpath_encoded) { | |
4688 | /* When packet overflow occurs return immediately. */ | |
4689 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
4690 | return -1; | |
4691 | ||
4692 | addpath_id = ntohl(*((uint32_t *)pnt)); | |
4693 | pnt += BGP_ADDPATH_ID_LEN; | |
4694 | } | |
4695 | ||
4696 | /* All EVPN NLRI types start with type and length. */ | |
4697 | if (pnt + 2 > lim) | |
4698 | return -1; | |
4699 | ||
4700 | rtype = *pnt++; | |
3f54c705 | 4701 | psize = *pnt++; |
d62a17ae | 4702 | |
4703 | /* When packet overflow occur return immediately. */ | |
4704 | if (pnt + psize > lim) | |
4705 | return -1; | |
4706 | ||
4707 | switch (rtype) { | |
4708 | case BGP_EVPN_MAC_IP_ROUTE: | |
4709 | if (process_type2_route(peer, afi, safi, | |
4710 | withdraw ? NULL : attr, pnt, | |
4711 | psize, addpath_id)) { | |
4712 | zlog_err( | |
4713 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", | |
4714 | peer->bgp->vrf_id, peer->host, psize); | |
4715 | return -1; | |
4716 | } | |
4717 | break; | |
4718 | ||
4719 | case BGP_EVPN_IMET_ROUTE: | |
4720 | if (process_type3_route(peer, afi, safi, | |
4721 | withdraw ? NULL : attr, pnt, | |
4722 | psize, addpath_id)) { | |
4723 | zlog_err( | |
4724 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", | |
4725 | peer->bgp->vrf_id, peer->host, psize); | |
4726 | return -1; | |
4727 | } | |
4728 | break; | |
4729 | ||
50f74cf1 | 4730 | case BGP_EVPN_ES_ROUTE: |
4731 | if (process_type4_route(peer, afi, safi, | |
4732 | withdraw ? NULL : attr, pnt, | |
4733 | psize, addpath_id)) { | |
4734 | zlog_err( | |
4735 | "%u:%s - Error in processing EVPN type-4 NLRI size %d", | |
4736 | peer->bgp->vrf_id, peer->host, psize); | |
4737 | return -1; | |
4738 | } | |
4739 | break; | |
4740 | ||
d62a17ae | 4741 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4742 | if (process_type5_route(peer, afi, safi, attr, pnt, | |
4743 | psize, addpath_id, withdraw)) { | |
4744 | zlog_err( | |
4745 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", | |
4746 | peer->bgp->vrf_id, peer->host, psize); | |
4747 | return -1; | |
4748 | } | |
4749 | break; | |
4750 | ||
4751 | default: | |
4752 | break; | |
4753 | } | |
4754 | } | |
4755 | ||
4756 | /* Packet length consistency check. */ | |
4757 | if (pnt != lim) | |
4758 | return -1; | |
4759 | ||
4760 | return 0; | |
128ea8ab | 4761 | } |
4762 | ||
10ebe1ab MK |
4763 | /* |
4764 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
4765 | * The mapping will be used during route processing. | |
4766 | * bgp_def: default bgp instance | |
4767 | * bgp_vrf: specific bgp vrf instance on which RT is configured | |
4768 | */ | |
4769 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
4770 | { | |
4771 | int i = 0; | |
4772 | struct ecommunity_val *eval = NULL; | |
4773 | struct listnode *node = NULL, *nnode = NULL; | |
4774 | struct ecommunity *ecom = NULL; | |
4775 | ||
4776 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4777 | for (i = 0; i < ecom->size; i++) { | |
4778 | eval = (struct ecommunity_val *)(ecom->val | |
4779 | + (i | |
4780 | * ECOMMUNITY_SIZE)); | |
4781 | map_vrf_to_rt(bgp_vrf, eval); | |
4782 | } | |
4783 | } | |
4784 | } | |
4785 | ||
4786 | /* | |
4787 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
4788 | */ | |
4789 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
4790 | { | |
4791 | int i; | |
4792 | struct ecommunity_val *eval; | |
4793 | struct listnode *node, *nnode; | |
4794 | struct ecommunity *ecom; | |
4795 | ||
4796 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4797 | for (i = 0; i < ecom->size; i++) { | |
4798 | struct vrf_irt_node *irt; | |
4799 | struct ecommunity_val eval_tmp; | |
4800 | ||
4801 | eval = (struct ecommunity_val *)(ecom->val | |
4802 | + (i | |
4803 | * ECOMMUNITY_SIZE)); | |
4804 | /* If using "automatic" RT, we only care about the | |
4805 | * local-admin sub-field. | |
4806 | * This is to facilitate using VNI as the RT for EBGP | |
4807 | * peering too. | |
4808 | */ | |
4809 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
4810 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, | |
4811 | BGP_VRF_IMPORT_RT_CFGD)) | |
4812 | mask_ecom_global_admin(&eval_tmp, eval); | |
4813 | ||
4814 | irt = lookup_vrf_import_rt(&eval_tmp); | |
4815 | if (irt) | |
4816 | unmap_vrf_from_rt(bgp_vrf, irt); | |
4817 | } | |
4818 | } | |
4819 | } | |
4820 | ||
4821 | ||
128ea8ab | 4822 | /* |
4823 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
4824 | * The mapping will be used during route processing. | |
4825 | */ | |
d62a17ae | 4826 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4827 | { |
d62a17ae | 4828 | int i; |
4829 | struct ecommunity_val *eval; | |
4830 | struct listnode *node, *nnode; | |
4831 | struct ecommunity *ecom; | |
128ea8ab | 4832 | |
d62a17ae | 4833 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
4834 | for (i = 0; i < ecom->size; i++) { | |
4835 | eval = (struct ecommunity_val *)(ecom->val | |
4836 | + (i | |
4837 | * ECOMMUNITY_SIZE)); | |
4838 | map_vni_to_rt(bgp, vpn, eval); | |
4839 | } | |
4840 | } | |
128ea8ab | 4841 | } |
4842 | ||
4843 | /* | |
4844 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
4845 | */ | |
d62a17ae | 4846 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4847 | { |
d62a17ae | 4848 | int i; |
4849 | struct ecommunity_val *eval; | |
4850 | struct listnode *node, *nnode; | |
4851 | struct ecommunity *ecom; | |
128ea8ab | 4852 | |
d62a17ae | 4853 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
4854 | for (i = 0; i < ecom->size; i++) { | |
4855 | struct irt_node *irt; | |
4856 | struct ecommunity_val eval_tmp; | |
128ea8ab | 4857 | |
d62a17ae | 4858 | eval = (struct ecommunity_val *)(ecom->val |
4859 | + (i | |
4860 | * ECOMMUNITY_SIZE)); | |
4861 | /* If using "automatic" RT, we only care about the | |
4862 | * local-admin sub-field. | |
4863 | * This is to facilitate using VNI as the RT for EBGP | |
4864 | * peering too. | |
4865 | */ | |
4866 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
4867 | if (!is_import_rt_configured(vpn)) | |
4868 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 4869 | |
d62a17ae | 4870 | irt = lookup_import_rt(bgp, &eval_tmp); |
4871 | if (irt) | |
4872 | unmap_vni_from_rt(bgp, vpn, irt); | |
4873 | } | |
4874 | } | |
128ea8ab | 4875 | } |
4876 | ||
4877 | /* | |
4878 | * Derive Import RT automatically for VNI and map VNI to RT. | |
4879 | * The mapping will be used during route processing. | |
4880 | */ | |
d62a17ae | 4881 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4882 | { |
c581d8b0 | 4883 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl); |
d62a17ae | 4884 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 4885 | |
d62a17ae | 4886 | /* Map RT to VNI */ |
4887 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 4888 | } |
4889 | ||
4890 | /* | |
4891 | * Derive Export RT automatically for VNI. | |
4892 | */ | |
d62a17ae | 4893 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4894 | { |
c581d8b0 | 4895 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl); |
d62a17ae | 4896 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 4897 | } |
4898 | ||
676f83b9 | 4899 | /* |
4900 | * Derive RD automatically for VNI using passed information - it | |
4901 | * is of the form RouterId:unique-id-for-vni. | |
4902 | */ | |
4903 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
4904 | { | |
92708db6 | 4905 | form_auto_rd(bgp->router_id, bgp->vrf_rd_id, &bgp->vrf_prd); |
676f83b9 | 4906 | } |
4907 | ||
128ea8ab | 4908 | /* |
4909 | * Derive RD automatically for VNI using passed information - it | |
4910 | * is of the form RouterId:unique-id-for-vni. | |
4911 | */ | |
d62a17ae | 4912 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4913 | { |
d62a17ae | 4914 | char buf[100]; |
128ea8ab | 4915 | |
d62a17ae | 4916 | vpn->prd.family = AF_UNSPEC; |
4917 | vpn->prd.prefixlen = 64; | |
4918 | sprintf(buf, "%s:%hu", inet_ntoa(bgp->router_id), vpn->rd_id); | |
cbb65f5e | 4919 | (void)str2prefix_rd(buf, &vpn->prd); |
d62a17ae | 4920 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 4921 | } |
4922 | ||
4923 | /* | |
4924 | * Lookup VNI. | |
4925 | */ | |
d62a17ae | 4926 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 4927 | { |
d62a17ae | 4928 | struct bgpevpn *vpn; |
4929 | struct bgpevpn tmp; | |
128ea8ab | 4930 | |
d62a17ae | 4931 | memset(&tmp, 0, sizeof(struct bgpevpn)); |
4932 | tmp.vni = vni; | |
4933 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
4934 | return vpn; | |
128ea8ab | 4935 | } |
4936 | ||
4937 | /* | |
4938 | * Create a new vpn - invoked upon configuration or zebra notification. | |
4939 | */ | |
d62a17ae | 4940 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
29c53922 MK |
4941 | struct in_addr originator_ip, |
4942 | vrf_id_t tenant_vrf_id) | |
128ea8ab | 4943 | { |
d62a17ae | 4944 | struct bgpevpn *vpn; |
128ea8ab | 4945 | |
d62a17ae | 4946 | if (!bgp) |
4947 | return NULL; | |
128ea8ab | 4948 | |
d62a17ae | 4949 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
4950 | if (!vpn) | |
4951 | return NULL; | |
128ea8ab | 4952 | |
d62a17ae | 4953 | /* Set values - RD and RT set to defaults. */ |
4954 | vpn->vni = vni; | |
4955 | vpn->originator_ip = originator_ip; | |
29c53922 | 4956 | vpn->tenant_vrf_id = tenant_vrf_id; |
128ea8ab | 4957 | |
d62a17ae | 4958 | /* Initialize route-target import and export lists */ |
4959 | vpn->import_rtl = list_new(); | |
4960 | vpn->import_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 4961 | vpn->import_rtl->del = evpn_xxport_delete_ecomm; |
d62a17ae | 4962 | vpn->export_rtl = list_new(); |
4963 | vpn->export_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 4964 | vpn->export_rtl->del = evpn_xxport_delete_ecomm; |
e9eb5f63 | 4965 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 4966 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 4967 | |
d62a17ae | 4968 | /* Initialize EVPN route table. */ |
960035b2 | 4969 | vpn->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
128ea8ab | 4970 | |
d62a17ae | 4971 | /* Add to hash */ |
4972 | if (!hash_get(bgp->vnihash, vpn, hash_alloc_intern)) { | |
4973 | XFREE(MTYPE_BGP_EVPN, vpn); | |
4974 | return NULL; | |
4975 | } | |
6a8657d0 MK |
4976 | |
4977 | /* add to l2vni list on corresponding vrf */ | |
4978 | bgpevpn_link_to_l3vni(vpn); | |
4979 | ||
d62a17ae | 4980 | QOBJ_REG(vpn, bgpevpn); |
4981 | return vpn; | |
128ea8ab | 4982 | } |
4983 | ||
4984 | /* | |
4985 | * Free a given VPN - called in multiple scenarios such as zebra | |
4986 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
4987 | * This just frees appropriate memory, caller should have taken other | |
4988 | * needed actions. | |
4989 | */ | |
d62a17ae | 4990 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4991 | { |
6a8657d0 | 4992 | bgpevpn_unlink_from_l3vni(vpn); |
d62a17ae | 4993 | bgp_table_unlock(vpn->route_table); |
4994 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
affe9e99 DS |
4995 | list_delete_and_null(&vpn->import_rtl); |
4996 | list_delete_and_null(&vpn->export_rtl); | |
e9eb5f63 | 4997 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 4998 | hash_release(bgp->vnihash, vpn); |
4999 | QOBJ_UNREG(vpn); | |
5000 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 5001 | } |
5002 | ||
5003 | /* | |
50f74cf1 | 5004 | * Lookup local ES. |
5005 | */ | |
5006 | struct evpnes *bgp_evpn_lookup_es(struct bgp *bgp, esi_t *esi) | |
5007 | { | |
5008 | struct evpnes *es; | |
5009 | struct evpnes tmp; | |
5010 | ||
5011 | memset(&tmp, 0, sizeof(struct evpnes)); | |
5012 | memcpy(&tmp.esi, esi, sizeof(esi_t)); | |
5013 | es = hash_lookup(bgp->esihash, &tmp); | |
5014 | return es; | |
5015 | } | |
5016 | ||
5017 | /* | |
5018 | * Create a new local es - invoked upon zebra notification. | |
5019 | */ | |
5020 | struct evpnes *bgp_evpn_es_new(struct bgp *bgp, | |
5021 | esi_t *esi, | |
5022 | struct ipaddr *originator_ip) | |
5023 | { | |
5024 | char buf[100]; | |
5025 | struct evpnes *es; | |
5026 | ||
5027 | if (!bgp) | |
5028 | return NULL; | |
5029 | ||
5030 | es = XCALLOC(MTYPE_BGP_EVPN_ES, sizeof(struct evpnes)); | |
5031 | if (!es) | |
5032 | return NULL; | |
5033 | ||
5034 | /* set the ESI and originator_ip */ | |
5035 | memcpy(&es->esi, esi, sizeof(esi_t)); | |
5036 | memcpy(&es->originator_ip, originator_ip, sizeof(struct ipaddr)); | |
5037 | ||
5038 | /* Initialise the VTEP list */ | |
5039 | es->vtep_list = list_new(); | |
5040 | es->vtep_list->cmp = (int (*)(void *, void *))evpn_vtep_ip_cmp; | |
5041 | ||
5042 | /* auto derive RD for this es */ | |
5043 | bf_assign_index(bm->rd_idspace, es->rd_id); | |
5044 | es->prd.family = AF_UNSPEC; | |
5045 | es->prd.prefixlen = 64; | |
5046 | sprintf(buf, "%s:%hu", inet_ntoa(bgp->router_id), es->rd_id); | |
5047 | (void)str2prefix_rd(buf, &es->prd); | |
5048 | ||
5049 | /* Initialize the ES route table */ | |
5050 | es->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); | |
5051 | ||
5052 | /* Add to hash */ | |
5053 | if (!hash_get(bgp->esihash, es, hash_alloc_intern)) { | |
5054 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
5055 | return NULL; | |
5056 | } | |
5057 | ||
5058 | QOBJ_REG(es, evpnes); | |
5059 | return es; | |
5060 | } | |
5061 | ||
5062 | /* | |
5063 | * Free a given ES - | |
5064 | * This just frees appropriate memory, caller should have taken other | |
5065 | * needed actions. | |
5066 | */ | |
5067 | void bgp_evpn_es_free(struct bgp *bgp, struct evpnes *es) | |
5068 | { | |
5069 | list_delete_and_null(&es->vtep_list); | |
5070 | bgp_table_unlock(es->route_table); | |
5071 | bf_release_index(bm->rd_idspace, es->rd_id); | |
5072 | hash_release(bgp->esihash, es); | |
5073 | QOBJ_UNREG(es); | |
5074 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
5075 | } | |
5076 | ||
5077 | /* | |
5078 | * Import evpn route from global table to VNI/VRF/ESI. | |
128ea8ab | 5079 | */ |
d62a17ae | 5080 | int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5081 | struct prefix *p, struct bgp_info *ri) | |
128ea8ab | 5082 | { |
d62a17ae | 5083 | return install_uninstall_evpn_route(bgp, afi, safi, p, ri, 1); |
128ea8ab | 5084 | } |
5085 | ||
5086 | /* | |
50f74cf1 | 5087 | * Unimport evpn route from VNI/VRF/ESI. |
128ea8ab | 5088 | */ |
d62a17ae | 5089 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5090 | struct prefix *p, struct bgp_info *ri) | |
128ea8ab | 5091 | { |
d62a17ae | 5092 | return install_uninstall_evpn_route(bgp, afi, safi, p, ri, 0); |
128ea8ab | 5093 | } |
5094 | ||
db0e1937 MK |
5095 | /* filter routes which have martian next hops */ |
5096 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
5097 | { | |
0291c246 MK |
5098 | afi_t afi; |
5099 | safi_t safi; | |
5100 | struct bgp_node *rd_rn, *rn; | |
5101 | struct bgp_table *table; | |
5102 | struct bgp_info *ri; | |
db0e1937 MK |
5103 | |
5104 | afi = AFI_L2VPN; | |
5105 | safi = SAFI_EVPN; | |
5106 | ||
5107 | /* Walk entire global routing table and evaluate routes which could be | |
5108 | * imported into this VPN. Note that we cannot just look at the routes | |
5109 | * for the VNI's RD - | |
5110 | * remote routes applicable for this VNI could have any RD. | |
5111 | */ | |
5112 | /* EVPN routes are a 2-level table. */ | |
5113 | for (rd_rn = bgp_table_top(bgp->rib[afi][safi]); rd_rn; | |
5114 | rd_rn = bgp_route_next(rd_rn)) { | |
5115 | table = (struct bgp_table *)(rd_rn->info); | |
5116 | if (!table) | |
5117 | continue; | |
5118 | ||
5119 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
5120 | ||
5121 | for (ri = rn->info; ri; ri = ri->next) { | |
5122 | ||
5123 | /* Consider "valid" remote routes applicable for | |
5124 | * this VNI. */ | |
5125 | if (!(ri->type == ZEBRA_ROUTE_BGP | |
5126 | && ri->sub_type == BGP_ROUTE_NORMAL)) | |
5127 | continue; | |
5128 | ||
60466a63 | 5129 | if (bgp_nexthop_self(bgp, ri->attr->nexthop)) { |
db0e1937 MK |
5130 | |
5131 | char attr_str[BUFSIZ]; | |
5132 | char pbuf[PREFIX_STRLEN]; | |
5133 | ||
5134 | bgp_dump_attr(ri->attr, attr_str, | |
5135 | BUFSIZ); | |
5136 | ||
5137 | if (bgp_debug_update(ri->peer, &rn->p, | |
5138 | NULL, 1)) | |
5139 | zlog_debug( | |
b682f6de | 5140 | "%u: prefix %s with attr %s - DENIED due to martian or self nexthop", |
db0e1937 MK |
5141 | bgp->vrf_id, |
5142 | prefix2str( | |
60466a63 | 5143 | &rn->p, pbuf, |
db0e1937 MK |
5144 | sizeof(pbuf)), |
5145 | attr_str); | |
5146 | ||
5147 | bgp_evpn_unimport_route(bgp, afi, safi, | |
5148 | &rn->p, ri); | |
5149 | ||
60466a63 QY |
5150 | bgp_rib_remove(rn, ri, ri->peer, afi, |
5151 | safi); | |
db0e1937 | 5152 | } |
db0e1937 MK |
5153 | } |
5154 | } | |
5155 | } | |
5156 | ||
5157 | return 0; | |
5158 | } | |
5159 | ||
128ea8ab | 5160 | /* |
5161 | * Handle del of a local MACIP. | |
5162 | */ | |
d62a17ae | 5163 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
5164 | struct ipaddr *ip) | |
128ea8ab | 5165 | { |
d62a17ae | 5166 | struct bgpevpn *vpn; |
5167 | struct prefix_evpn p; | |
128ea8ab | 5168 | |
d62a17ae | 5169 | /* Lookup VNI hash - should exist. */ |
5170 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5171 | if (!vpn || !is_vni_live(vpn)) { | |
5172 | zlog_warn("%u: VNI hash entry for VNI %u %s at MACIP DEL", | |
5173 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); | |
5174 | return -1; | |
5175 | } | |
128ea8ab | 5176 | |
d62a17ae | 5177 | /* Remove EVPN type-2 route and schedule for processing. */ |
5178 | build_evpn_type2_prefix(&p, mac, ip); | |
5179 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 5180 | |
d62a17ae | 5181 | return 0; |
128ea8ab | 5182 | } |
5183 | ||
5184 | /* | |
5185 | * Handle add of a local MACIP. | |
5186 | */ | |
d62a17ae | 5187 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
d7c0a89a | 5188 | struct ipaddr *ip, uint8_t flags) |
128ea8ab | 5189 | { |
d62a17ae | 5190 | struct bgpevpn *vpn; |
5191 | struct prefix_evpn p; | |
128ea8ab | 5192 | |
d62a17ae | 5193 | /* Lookup VNI hash - should exist. */ |
5194 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5195 | if (!vpn || !is_vni_live(vpn)) { | |
5196 | zlog_warn("%u: VNI hash entry for VNI %u %s at MACIP ADD", | |
5197 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); | |
5198 | return -1; | |
5199 | } | |
128ea8ab | 5200 | |
d62a17ae | 5201 | /* Create EVPN type-2 route and schedule for processing. */ |
5202 | build_evpn_type2_prefix(&p, mac, ip); | |
1a98c087 | 5203 | if (update_evpn_route(bgp, vpn, &p, flags)) { |
d62a17ae | 5204 | char buf[ETHER_ADDR_STRLEN]; |
5205 | char buf2[INET6_ADDRSTRLEN]; | |
128ea8ab | 5206 | |
d62a17ae | 5207 | zlog_err( |
ead40654 | 5208 | "%u:Failed to create Type-2 route, VNI %u %s MAC %s IP %s (flags: 0x%x)", |
1a98c087 | 5209 | bgp->vrf_id, vpn->vni, |
996c9314 LB |
5210 | CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) |
5211 | ? "sticky gateway" | |
5212 | : "", | |
d62a17ae | 5213 | prefix_mac2str(mac, buf, sizeof(buf)), |
996c9314 | 5214 | ipaddr2str(ip, buf2, sizeof(buf2)), flags); |
d62a17ae | 5215 | return -1; |
5216 | } | |
128ea8ab | 5217 | |
d62a17ae | 5218 | return 0; |
128ea8ab | 5219 | } |
5220 | ||
6a8657d0 MK |
5221 | static void link_l2vni_hash_to_l3vni(struct hash_backet *backet, |
5222 | struct bgp *bgp_vrf) | |
5223 | { | |
5224 | struct bgpevpn *vpn = NULL; | |
5225 | struct bgp *bgp_def = NULL; | |
5226 | ||
5227 | bgp_def = bgp_get_default(); | |
5228 | assert(bgp_def); | |
5229 | ||
5230 | vpn = (struct bgpevpn *)backet->data; | |
5231 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) | |
5232 | bgpevpn_link_to_l3vni(vpn); | |
5233 | } | |
5234 | ||
996c9314 LB |
5235 | int bgp_evpn_local_l3vni_add(vni_t l3vni, vrf_id_t vrf_id, struct ethaddr *rmac, |
5236 | struct in_addr originator_ip, int filter) | |
fe1dc5a3 MK |
5237 | { |
5238 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
5239 | struct bgp *bgp_def = NULL; /* default bgp instance */ | |
f1f8b53c MK |
5240 | struct listnode *node = NULL; |
5241 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
5242 | as_t as = 0; |
5243 | ||
d846168d | 5244 | /* get the default instance - required to get the AS number for VRF |
523cafc4 | 5245 | * auto-creatio |
5246 | */ | |
fe1dc5a3 MK |
5247 | bgp_def = bgp_get_default(); |
5248 | if (!bgp_def) { | |
996c9314 LB |
5249 | zlog_err( |
5250 | "Cannot process L3VNI %u ADD - default BGP instance not yet created", | |
5251 | l3vni); | |
fe1dc5a3 MK |
5252 | return -1; |
5253 | } | |
5254 | as = bgp_def->as; | |
5255 | ||
5256 | /* if the BGP vrf instance doesnt exist - create one */ | |
0b5131c9 | 5257 | bgp_vrf = bgp_lookup_by_name(vrf_id_to_name(vrf_id)); |
fe1dc5a3 MK |
5258 | if (!bgp_vrf) { |
5259 | ||
5260 | int ret = 0; | |
5261 | ||
5262 | ret = bgp_get(&bgp_vrf, &as, vrf_id_to_name(vrf_id), | |
5263 | BGP_INSTANCE_TYPE_VRF); | |
5264 | switch (ret) { | |
5265 | case BGP_ERR_MULTIPLE_INSTANCE_NOT_SET: | |
5266 | zlog_err("'bgp multiple-instance' not present\n"); | |
5267 | return -1; | |
5268 | case BGP_ERR_AS_MISMATCH: | |
5269 | zlog_err("BGP is already running; AS is %u\n", as); | |
5270 | return -1; | |
5271 | case BGP_ERR_INSTANCE_MISMATCH: | |
5272 | zlog_err("BGP instance name and AS number mismatch\n"); | |
5273 | return -1; | |
5274 | } | |
5275 | ||
5276 | /* mark as auto created */ | |
5277 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
5278 | } | |
5279 | ||
5280 | /* associate with l3vni */ | |
5281 | bgp_vrf->l3vni = l3vni; | |
5282 | ||
5283 | /* set the router mac - to be used in mac-ip routes for this vrf */ | |
5284 | memcpy(&bgp_vrf->rmac, rmac, sizeof(struct ethaddr)); | |
5285 | ||
b67a60d2 | 5286 | /* set the originator ip */ |
5287 | bgp_vrf->originator_ip = originator_ip; | |
5288 | ||
c48d9f5f MK |
5289 | /* set the right filter - are we using l3vni only for prefix routes? */ |
5290 | if (filter) | |
5291 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); | |
5292 | ||
c581d8b0 MK |
5293 | /* auto derive RD/RT */ |
5294 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) | |
5295 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
5296 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) | |
5297 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
676f83b9 | 5298 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 5299 | |
6a8657d0 MK |
5300 | /* link all corresponding l2vnis */ |
5301 | hash_iterate(bgp_def->vnihash, | |
996c9314 LB |
5302 | (void (*)(struct hash_backet *, |
5303 | void *))link_l2vni_hash_to_l3vni, | |
6a8657d0 MK |
5304 | bgp_vrf); |
5305 | ||
c48d9f5f MK |
5306 | /* Only update all corresponding type-2 routes if we are advertising two |
5307 | * labels along with type-2 routes | |
5308 | */ | |
5309 | if (!filter) | |
5310 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
5311 | update_routes_for_vni(bgp_def, vpn); | |
fe1dc5a3 | 5312 | |
06d2e8f3 MK |
5313 | /* advertise type-5 routes if needed */ |
5314 | update_advertise_vrf_routes(bgp_vrf); | |
5315 | ||
5ba238b7 MK |
5316 | /* install all remote routes belonging to this l3vni into correspondng |
5317 | * vrf */ | |
5318 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
5319 | |
5320 | return 0; | |
5321 | } | |
5322 | ||
996c9314 | 5323 | int bgp_evpn_local_l3vni_del(vni_t l3vni, vrf_id_t vrf_id) |
fe1dc5a3 MK |
5324 | { |
5325 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
f1f8b53c MK |
5326 | struct bgp *bgp_def = NULL; /* default bgp instance */ |
5327 | struct listnode *node = NULL; | |
18abc1eb | 5328 | struct listnode *next = NULL; |
f1f8b53c | 5329 | struct bgpevpn *vpn = NULL; |
fe1dc5a3 MK |
5330 | |
5331 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
5332 | if (!bgp_vrf) { | |
996c9314 LB |
5333 | zlog_err( |
5334 | "Cannot process L3VNI %u Del - Could not find BGP instance", | |
5335 | l3vni); | |
fe1dc5a3 MK |
5336 | return -1; |
5337 | } | |
5338 | ||
f1f8b53c MK |
5339 | bgp_def = bgp_get_default(); |
5340 | if (!bgp_def) { | |
996c9314 LB |
5341 | zlog_err( |
5342 | "Cannot process L3VNI %u Del - Could not find default BGP instance", | |
5343 | l3vni); | |
f1f8b53c MK |
5344 | return -1; |
5345 | } | |
5346 | ||
d846168d CS |
5347 | /* Remove remote routes from BGT VRF even if BGP_VRF_AUTO is configured, |
5348 | * bgp_delete would not remove/decrement bgp_info of the ip_prefix | |
5349 | * routes. This will uninstalling the routes from zebra and decremnt the | |
5350 | * bgp info count. | |
523cafc4 | 5351 | */ |
d846168d | 5352 | uninstall_routes_for_vrf(bgp_vrf); |
5ba238b7 | 5353 | |
06d2e8f3 MK |
5354 | /* delete/withdraw all type-5 routes */ |
5355 | delete_withdraw_vrf_routes(bgp_vrf); | |
5356 | ||
fe1dc5a3 MK |
5357 | /* remove the l3vni from vrf instance */ |
5358 | bgp_vrf->l3vni = 0; | |
5359 | ||
5360 | /* remove the Rmac from the BGP vrf */ | |
5361 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
5362 | ||
c581d8b0 | 5363 | /* delete RD/RT */ |
1525e99f | 5364 | if (!list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 5365 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
5ba238b7 | 5366 | list_delete_all_node(bgp_vrf->vrf_import_rtl); |
23a06e11 | 5367 | } |
1525e99f | 5368 | if (!list_isempty(bgp_vrf->vrf_export_rtl)) { |
5ba238b7 | 5369 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 5370 | } |
fe1dc5a3 | 5371 | |
f1f8b53c | 5372 | /* update all corresponding local mac-ip routes */ |
c48d9f5f MK |
5373 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) { |
5374 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5375 | UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5376 | update_routes_for_vni(bgp_def, vpn); | |
5377 | } | |
5378 | } | |
fe1dc5a3 | 5379 | |
18abc1eb | 5380 | /* If any L2VNIs point to this instance, unlink them. */ |
5381 | for (ALL_LIST_ELEMENTS(bgp_vrf->l2vnis, node, next, vpn)) | |
5382 | bgpevpn_unlink_from_l3vni(vpn); | |
5383 | ||
fe1dc5a3 MK |
5384 | /* Delete the instance if it was autocreated */ |
5385 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
5386 | bgp_delete(bgp_vrf); | |
5387 | ||
5388 | return 0; | |
5389 | } | |
5390 | ||
128ea8ab | 5391 | /* |
5392 | * Handle del of a local VNI. | |
5393 | */ | |
d62a17ae | 5394 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 5395 | { |
d62a17ae | 5396 | struct bgpevpn *vpn; |
128ea8ab | 5397 | |
d62a17ae | 5398 | /* Locate VNI hash */ |
5399 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5400 | if (!vpn) { | |
1e00627b | 5401 | if (bgp_debug_zebra(NULL)) |
3518f352 DS |
5402 | zlog_warn( |
5403 | "%u: VNI hash entry for VNI %u not found at DEL", | |
5404 | bgp->vrf_id, vni); | |
d62a17ae | 5405 | return 0; |
5406 | } | |
128ea8ab | 5407 | |
d62a17ae | 5408 | /* Remove all local EVPN routes and schedule for processing (to |
5409 | * withdraw from peers). | |
5410 | */ | |
5411 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 5412 | |
db0e1937 MK |
5413 | /* |
5414 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
5415 | */ | |
5416 | bgp_tip_del(bgp, &vpn->originator_ip); | |
5417 | ||
d62a17ae | 5418 | /* Clear "live" flag and see if hash needs to be freed. */ |
5419 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5420 | if (!is_vni_configured(vpn)) | |
5421 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 5422 | |
d62a17ae | 5423 | return 0; |
128ea8ab | 5424 | } |
5425 | ||
5426 | /* | |
d1911c26 | 5427 | * Handle add (or update) of a local VNI. The VNI changes we care |
5428 | * about are for the local-tunnel-ip and the (tenant) VRF. | |
128ea8ab | 5429 | */ |
d62a17ae | 5430 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
996c9314 | 5431 | struct in_addr originator_ip, vrf_id_t tenant_vrf_id) |
d62a17ae | 5432 | { |
5433 | struct bgpevpn *vpn; | |
5434 | struct prefix_evpn p; | |
5435 | ||
d62a17ae | 5436 | /* Lookup VNI. If present and no change, exit. */ |
5437 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 5438 | if (vpn) { |
29c53922 | 5439 | |
d1911c26 | 5440 | if (is_vni_live(vpn) |
5441 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip) | |
5442 | && vpn->tenant_vrf_id == tenant_vrf_id) | |
5443 | /* Probably some other param has changed that we don't | |
5444 | * care about. */ | |
5445 | return 0; | |
5446 | ||
5447 | /* Update tenant_vrf_id if it has changed. */ | |
6a8657d0 MK |
5448 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
5449 | bgpevpn_unlink_from_l3vni(vpn); | |
29c53922 | 5450 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 MK |
5451 | bgpevpn_link_to_l3vni(vpn); |
5452 | } | |
29c53922 | 5453 | |
d1911c26 | 5454 | /* If tunnel endpoint IP has changed, update (and delete prior |
5455 | * type-3 route, if needed.) | |
5456 | */ | |
5457 | if (!IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) | |
5458 | handle_tunnel_ip_change(bgp, vpn, originator_ip); | |
d62a17ae | 5459 | |
d1911c26 | 5460 | /* Update all routes with new endpoint IP and/or export RT |
5461 | * for VRFs | |
5462 | */ | |
5463 | if (is_vni_live(vpn)) | |
5464 | update_routes_for_vni(bgp, vpn); | |
d62a17ae | 5465 | } |
5466 | ||
5467 | /* Create or update as appropriate. */ | |
5468 | if (!vpn) { | |
29c53922 | 5469 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id); |
d62a17ae | 5470 | if (!vpn) { |
5471 | zlog_err( | |
5472 | "%u: Failed to allocate VNI entry for VNI %u - at Add", | |
5473 | bgp->vrf_id, vni); | |
5474 | return -1; | |
5475 | } | |
5476 | } | |
5477 | ||
db0e1937 | 5478 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
5479 | if (is_vni_live(vpn)) |
5480 | return 0; | |
5481 | ||
d62a17ae | 5482 | /* Mark as "live" */ |
5483 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5484 | ||
db0e1937 MK |
5485 | /* tunnel is now active, add tunnel-ip to db */ |
5486 | bgp_tip_add(bgp, &originator_ip); | |
5487 | ||
5488 | /* filter routes as nexthop database has changed */ | |
5489 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
5490 | ||
d62a17ae | 5491 | /* Create EVPN type-3 route and schedule for processing. */ |
5492 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
5493 | if (update_evpn_route(bgp, vpn, &p, 0)) { | |
5494 | zlog_err("%u: Type3 route creation failure for VNI %u", | |
5495 | bgp->vrf_id, vni); | |
5496 | return -1; | |
5497 | } | |
5498 | ||
5499 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
5500 | * VNI, | |
5501 | * install them. | |
5502 | */ | |
5503 | install_routes_for_vni(bgp, vpn); | |
5504 | ||
d7d97010 MK |
5505 | /* If we are advertising gateway mac-ip |
5506 | It needs to be conveyed again to zebra */ | |
5507 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
5508 | ||
d62a17ae | 5509 | return 0; |
b18825eb | 5510 | } |
14c1a7bf | 5511 | |
50f74cf1 | 5512 | /* |
5513 | * bgp_evpn_local_es_del | |
5514 | */ | |
5515 | int bgp_evpn_local_es_del(struct bgp *bgp, | |
5516 | esi_t *esi, | |
5517 | struct ipaddr *originator_ip) | |
5518 | { | |
5519 | char buf[ESI_STR_LEN]; | |
5520 | struct evpnes *es = NULL; | |
5521 | ||
5522 | if (!bgp->esihash) { | |
5523 | zlog_err("%u: ESI hash not yet created", bgp->vrf_id); | |
5524 | return -1; | |
5525 | } | |
5526 | ||
5527 | /* Lookup ESI hash - should exist. */ | |
5528 | es = bgp_evpn_lookup_es(bgp, esi); | |
5529 | if (!es) { | |
5530 | zlog_warn("%u: ESI hash entry for ESI %s at Local ES DEL", | |
5531 | bgp->vrf_id, | |
5532 | esi_to_str(esi, buf, sizeof(buf))); | |
5533 | return -1; | |
5534 | } | |
5535 | ||
5536 | /* Delete all local EVPN ES routes from ESI table | |
2bb9eff4 | 5537 | * and schedule for processing (to withdraw from peers)) |
50f74cf1 | 5538 | */ |
5539 | delete_routes_for_es(bgp, es); | |
5540 | ||
5541 | /* free the hash entry */ | |
5542 | bgp_evpn_es_free(bgp, es); | |
5543 | ||
5544 | return 0; | |
5545 | } | |
5546 | ||
5547 | /* | |
5548 | * bgp_evpn_local_es_add | |
5549 | */ | |
5550 | int bgp_evpn_local_es_add(struct bgp *bgp, | |
5551 | esi_t *esi, | |
5552 | struct ipaddr *originator_ip) | |
5553 | { | |
5554 | char buf[ESI_STR_LEN]; | |
5555 | struct evpnes *es = NULL; | |
5556 | struct prefix_evpn p; | |
5557 | ||
5558 | if (!bgp->esihash) { | |
5559 | zlog_err("%u: ESI hash not yet created", bgp->vrf_id); | |
5560 | return -1; | |
5561 | } | |
5562 | ||
5563 | /* create the new es */ | |
2bb9eff4 | 5564 | es = bgp_evpn_lookup_es(bgp, esi); |
50f74cf1 | 5565 | if (!es) { |
5566 | es = bgp_evpn_es_new(bgp, esi, originator_ip); | |
5567 | if (!es) { | |
5568 | zlog_err( | |
5569 | "%u: Failed to allocate ES entry for ESI %s - at Local ES Add", | |
5570 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
5571 | return -1; | |
5572 | } | |
5573 | } | |
5574 | UNSET_FLAG(es->flags, EVPNES_REMOTE); | |
5575 | SET_FLAG(es->flags, EVPNES_LOCAL); | |
5576 | ||
5577 | build_evpn_type4_prefix(&p, esi, originator_ip->ipaddr_v4); | |
5578 | if (update_evpn_type4_route(bgp, es, &p)) { | |
5579 | zlog_err("%u: Type4 route creation failure for ESI %s", | |
5580 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
5581 | return -1; | |
5582 | } | |
5583 | ||
5584 | /* import all remote ES routes in th ES table */ | |
5585 | install_routes_for_es(bgp, es); | |
5586 | ||
5587 | return 0; | |
5588 | } | |
5589 | ||
7724c0a1 | 5590 | /* |
5591 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
5592 | * EVPN routes from peers. | |
5593 | */ | |
d62a17ae | 5594 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 5595 | { |
9d303b37 DL |
5596 | hash_iterate(bgp->vnihash, (void (*)(struct hash_backet *, |
5597 | void *))cleanup_vni_on_disable, | |
5598 | bgp); | |
7724c0a1 | 5599 | } |
5600 | ||
14c1a7bf | 5601 | /* |
5602 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
5603 | * BGP instance (default) is being freed. | |
5604 | */ | |
d62a17ae | 5605 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 5606 | { |
1525e99f DS |
5607 | hash_iterate(bgp->vnihash, |
5608 | (void (*)(struct hash_backet *, void *))free_vni_entry, | |
5609 | bgp); | |
5610 | ||
5611 | hash_free(bgp->import_rt_hash); | |
d62a17ae | 5612 | bgp->import_rt_hash = NULL; |
1525e99f DS |
5613 | |
5614 | hash_free(bgp->vrf_import_rt_hash); | |
10ebe1ab | 5615 | bgp->vrf_import_rt_hash = NULL; |
1525e99f DS |
5616 | |
5617 | hash_free(bgp->vnihash); | |
d62a17ae | 5618 | bgp->vnihash = NULL; |
50f74cf1 | 5619 | if (bgp->esihash) |
5620 | hash_free(bgp->esihash); | |
5621 | bgp->esihash = NULL; | |
1525e99f DS |
5622 | |
5623 | list_delete_and_null(&bgp->vrf_import_rtl); | |
5624 | list_delete_and_null(&bgp->vrf_export_rtl); | |
5625 | list_delete_and_null(&bgp->l2vnis); | |
14c1a7bf | 5626 | } |
5627 | ||
5628 | /* | |
5629 | * Initialization for EVPN | |
5630 | * Create | |
5631 | * VNI hash table | |
5632 | * hash for RT to VNI | |
14c1a7bf | 5633 | */ |
d62a17ae | 5634 | void bgp_evpn_init(struct bgp *bgp) |
5635 | { | |
5636 | bgp->vnihash = | |
5637 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
50f74cf1 | 5638 | bgp->esihash = |
5639 | hash_create(esi_hash_keymake, esi_cmp, | |
5640 | "BGP EVPN Local ESI Hash"); | |
d62a17ae | 5641 | bgp->import_rt_hash = |
5642 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
5643 | "BGP Import RT Hash"); | |
10ebe1ab MK |
5644 | bgp->vrf_import_rt_hash = |
5645 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
5646 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
5647 | bgp->vrf_import_rtl = list_new(); |
5648 | bgp->vrf_import_rtl->cmp = | |
5649 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5650 | bgp->vrf_import_rtl->del = evpn_xxport_delete_ecomm; |
c581d8b0 MK |
5651 | bgp->vrf_export_rtl = list_new(); |
5652 | bgp->vrf_export_rtl->cmp = | |
5653 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5654 | bgp->vrf_export_rtl->del = evpn_xxport_delete_ecomm; |
6a8657d0 | 5655 | bgp->l2vnis = list_new(); |
996c9314 | 5656 | bgp->l2vnis->cmp = (int (*)(void *, void *))vni_hash_cmp; |
14c1a7bf | 5657 | } |
10ebe1ab MK |
5658 | |
5659 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
5660 | { | |
5661 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
5662 | } |